Determine rustc version and add it to the report

README.md

@@ -49,44 +49,50 @@ Thank you kindly!
 The error dump file generated by `human-panic` contains the following fields.
 
 ```toml
-name = 'single-panic-test'
-operating_system = 'unix:Unknown'
+name = 'single-panic-test2'
+operating_system = 'Debian (11) (64-bit)'
 crate_version = '0.1.0'
 explanation = '''
-Cause: OMG EVERYTHING IS ON FIRE!!!. Panic occurred in file 'tests/single-panic/src/main.rs' at line 8
+Panic occurred in file 'src/main.rs' at line 7
 '''
+cause = 'OMG EVERYTHING IS ON FIRE!!!'
 method = 'Panic'
 backtrace = '''
-stack backtrace:
-   0:     0x55fa0ed4c1b4 - backtrace::backtrace::libunwind::trace::h69e50feca54bfb84
-                        at /home/spacekookie/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.6/src/backtrace/libunwind.rs:53
-                         - backtrace::backtrace::trace::h42967341e0b01ccc
-                        at /home/spacekookie/.cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.6/src/backtrace/mod.rs:42
-
-    # ...
-
-   8:     0x55fa0ebaac8d - single_panic_test::main::h56a3d326bcecfc36
-                        at tests/single-panic/src/main.rs:8
-   9:     0x55fa0ebaae91 - std::rt::lang_start::{{closure}}::h09d28d8540038bf8
-                        at /checkout/src/libstd/rt.rs:74
-  10:     0x55fa0ed732f7 - std::rt::lang_start_internal::{{closure}}::h2e4baf0a27c956a3
-                        at libstd/rt.rs:59
-                         - std::panicking::try::do_call::h73f98ed0647c7274
-                        at libstd/panicking.rs:305
-  11:     0x55fa0ed8551e - __rust_maybe_catch_panic
-                        at libpanic_unwind/lib.rs:101
-  12:     0x55fa0ed6f7f5 - std::panicking::try::h18fbb145180d4cd9
-                        at libstd/panicking.rs:284
-                         - std::panic::catch_unwind::hc4b6a212a30b4bc5
-                        at libstd/panic.rs:361
-                         - std::rt::lang_start_internal::h8b001b4244930d51
-                        at libstd/rt.rs:58
-  13:     0x55fa0ebaae71 - std::rt::lang_start::h1b1de624209f414a
-                        at /checkout/src/libstd/rt.rs:74
-  14:     0x55fa0ebaacbd - main
-  15:     0x7f9946132f29 - __libc_start_main
-  16:     0x55fa0eba9b79 - _start
-  17:                0x0 - <unknown>'''
+
+   0: 0x55f1b1ed42af - single_panic_test2::main::h71eb4bc2300956b7
+   1: 0x55f1b1ed3623 - std::sys_common::backtrace::__rust_begin_short_backtrace::hb897a2290e3a3ed8
+   2: 0x55f1b1ed35f9 - std::rt::lang_start::{{closure}}::h4a4f0688fcbbe2a8
+   3: 0x55f1b1f1cf3a - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h02e5de65baee3e0a
+                at /rustc/d394408fb38c4de61f765a3ed5189d2731a1da91/library/core/src/ops/function.rs:280
+                 - std::panicking::try::do_call::h928f62916d7b4bf7
+                at /rustc/d394408fb38c4de61f765a3ed5189d2731a1da91/library/std/src/panicking.rs:492
+                 - std::panicking::try::he5e8d9bda1fee0d9
+                at /rustc/d394408fb38c4de61f765a3ed5189d2731a1da91/library/std/src/panicking.rs:456
+                 - std::panic::catch_unwind::hbdacb0480f3c3a44
+                at /rustc/d394408fb38c4de61f765a3ed5189d2731a1da91/library/std/src/panic.rs:137
+                 - std::rt::lang_start_internal::{{closure}}::h9307a76627b54f4f
+                at /rustc/d394408fb38c4de61f765a3ed5189d2731a1da91/library/std/src/rt.rs:128
+                 - std::panicking::try::do_call::h0baecbe86a821dd2
+                at /rustc/d394408fb38c4de61f765a3ed5189d2731a1da91/library/std/src/panicking.rs:492
+                 - std::panicking::try::h6c0869befc863f62
+                at /rustc/d394408fb38c4de61f765a3ed5189d2731a1da91/library/std/src/panicking.rs:456
+                 - std::panic::catch_unwind::h135074234245f66c
+                at /rustc/d394408fb38c4de61f765a3ed5189d2731a1da91/library/std/src/panic.rs:137
+                 - std::rt::lang_start_internal::h498f9556b87c8e5f
+                at /rustc/d394408fb38c4de61f765a3ed5189d2731a1da91/library/std/src/rt.rs:128
+   4: 0x55f1b1ed4ed2 - main
+   5: 0x7feeb3c40d0a - __libc_start_main
+                at ./csu/../csu/libc-start.c:308
+   6: 0x55f1b1ed1b3a - _start
+   7:        0x0 - <unresolved>'''
+rustc_version = '''
+rustc 1.65.0-nightly (d394408fb 2022-08-07)
+binary: rustc
+commit-hash: d394408fb38c4de61f765a3ed5189d2731a1da91
+commit-date: 2022-08-07
+host: x86_64-unknown-linux-gnu
+release: 1.65.0-nightly
+LLVM version: 14.0.6'''
 ```
 
 ## Usage

build.rs

@@ -0,0 +1,21 @@
+use std::process::{Command, Stdio};
+
+fn main() {
+    let mut version = String::new();
+    // Cargo passes rustc's binary path as the environment variable RUSTC
+    let rustc_path = std::env::var("RUSTC").unwrap();
+    let command = Command::new(rustc_path)
+        .arg("-vV")
+        .stdout(Stdio::piped())
+        .spawn();
+    if let Ok(command) = command {
+        let output = command.wait_with_output();
+        if let Ok(output) = output {
+            version = String::from_utf8_lossy(&output.stdout)
+                .trim()
+                .replace("\n", "\\n")
+                .to_string();
+        }
+    }
+    println!("cargo:rustc-env=RUSTC_VERSION={}", version);
+}

src/report.rs

@@ -31,6 +31,7 @@ pub struct Report {
   cause: String,
   method: Method,
   backtrace: String,
+  rustc_version: String
 }
 
 impl Report {
@@ -42,6 +43,7 @@ impl Report {
     explanation: String,
     cause: String,
   ) -> Self {
+    let rustc_version = env!("RUSTC_VERSION").to_string().replace("\\n", "\n");
     let operating_system = os_info::get().to_string();
 
     //We skip 3 frames from backtrace library
@@ -114,6 +116,7 @@ impl Report {
       explanation,
       cause,
       backtrace,
+      rustc_version
     }
   }