[INFO] cloning repository https://github.com/rmyhovych/shader-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rmyhovych/shader-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frmyhovych%2Fshader-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frmyhovych%2Fshader-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5aad2180f846740abf44bbae52eacd416f51d2ab
[INFO] documenting rmyhovych/shader-rust against try#a394c9cd9ec93787f09a7ac445b14cc674a94549 for pr-151918
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frmyhovych%2Fshader-rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rmyhovych/shader-rust
[INFO] finished tweaking git repo https://github.com/rmyhovych/shader-rust
[INFO] tweaked toml for git repo https://github.com/rmyhovych/shader-rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rmyhovych/shader-rust on toolchain a394c9cd9ec93787f09a7ac445b14cc674a94549
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a394c9cd9ec93787f09a7ac445b14cc674a94549" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rmyhovych/shader-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a394c9cd9ec93787f09a7ac445b14cc674a94549" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shaderc v0.6.3
[INFO] [stderr]   Downloaded cmake v0.1.44
[INFO] [stderr]   Downloaded cc v1.0.61
[INFO] [stderr]   Downloaded libc v0.2.80
[INFO] [stderr]   Downloaded shaderc-sys v0.6.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+a394c9cd9ec93787f09a7ac445b14cc674a94549" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98313a4747953a11f5c41bd47589207fdd1dc463a007b757857039fdb0ed3925
[INFO] running `Command { std: "docker" "start" "-a" "98313a4747953a11f5c41bd47589207fdd1dc463a007b757857039fdb0ed3925", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98313a4747953a11f5c41bd47589207fdd1dc463a007b757857039fdb0ed3925", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98313a4747953a11f5c41bd47589207fdd1dc463a007b757857039fdb0ed3925", kill_on_drop: false }`
[INFO] [stdout] 98313a4747953a11f5c41bd47589207fdd1dc463a007b757857039fdb0ed3925
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+a394c9cd9ec93787f09a7ac445b14cc674a94549" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c70bb6b0b091da708227d141ec91e5de69ae50a4a159d51aeedd0446ee553ae
[INFO] running `Command { std: "docker" "start" "-a" "8c70bb6b0b091da708227d141ec91e5de69ae50a4a159d51aeedd0446ee553ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling shaderc-sys v0.6.3
[INFO] [stderr] warning: shaderc-sys@0.6.3: Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr] warning: shaderc-sys@0.6.3: System installed library not found.  Falling back to build from source
[INFO] [stderr] error: failed to run custom build command for `shaderc-sys v0.6.3`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/shaderc-sys-53110b7c8a350245/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:warning=Checking for system installed libraries.  Use --features = build-from-source to disable this behavior
[INFO] [stderr]   cargo:warning=System installed library not found.  Falling back to build from source
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (117) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/shaderc-sys-0.6.3/build/cmd_finder.rs:50:13:
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   couldn't find required command: "python"
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5fe7663724da - std[6281e874092a0dfc]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5fe7663724da - std[6281e874092a0dfc]::backtrace_rs::backtrace::trace_unsynchronized::<std[6281e874092a0dfc]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5fe7663724da - std[6281e874092a0dfc]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x5fe7663724da - <<std[6281e874092a0dfc]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[37ab4a9f28f6fd13]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x5fe76638657a - <core[37ab4a9f28f6fd13]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x5fe76638657a - core[37ab4a9f28f6fd13]::fmt::write
[INFO] [stderr]      6:     0x5fe7663785b2 - std[6281e874092a0dfc]::io::default_write_fmt::<std[6281e874092a0dfc]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5fe7663785b2 - <std[6281e874092a0dfc]::sys::stdio::unix::Stderr as std[6281e874092a0dfc]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x5fe76635465f - <std[6281e874092a0dfc]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x5fe76635465f - std[6281e874092a0dfc]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x5fe76636d341 - std[6281e874092a0dfc]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x5fe76636d4fb - std[6281e874092a0dfc]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x5fe766354718 - std[6281e874092a0dfc]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x5fe766349899 - std[6281e874092a0dfc]::sys::backtrace::__rust_end_short_backtrace::<std[6281e874092a0dfc]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x5fe76635507d - __rustc[670611b3f56fc7d7]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x5fe766386bec - core[37ab4a9f28f6fd13]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x5fe7662f6986 - <build_script_build[71c9dedb304bc3de]::cmd_finder::CommandFinder>::must_have::<&str>::{closure#0}
[INFO] [stderr]     17:     0x5fe7662f4f99 - <core[37ab4a9f28f6fd13]::option::Option<std[6281e874092a0dfc]::path::PathBuf>>::unwrap_or_else::<<build_script_build[71c9dedb304bc3de]::cmd_finder::CommandFinder>::must_have<&str>::{closure#0}>
[INFO] [stderr]     18:     0x5fe7662f52fc - <build_script_build[71c9dedb304bc3de]::cmd_finder::CommandFinder>::must_have::<&str>
[INFO] [stderr]     19:     0x5fe7662fa1b6 - build_script_build[71c9dedb304bc3de]::main
[INFO] [stderr]     20:     0x5fe7662fc5c3 - <fn() as core[37ab4a9f28f6fd13]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     21:     0x5fe7662f5ea6 - std[6281e874092a0dfc]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     22:     0x5fe7662f6999 - std[6281e874092a0dfc]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     23:     0x5fe76636c436 - <&dyn core[37ab4a9f28f6fd13]::ops::function::Fn<(), Output = i32> + core[37ab4a9f28f6fd13]::panic::unwind_safe::RefUnwindSafe + core[37ab4a9f28f6fd13]::marker::Sync as core[37ab4a9f28f6fd13]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     24:     0x5fe76636c436 - std[6281e874092a0dfc]::panicking::catch_unwind::do_call::<&dyn core[37ab4a9f28f6fd13]::ops::function::Fn<(), Output = i32> + core[37ab4a9f28f6fd13]::panic::unwind_safe::RefUnwindSafe + core[37ab4a9f28f6fd13]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/panicking.rs:581:40
[INFO] [stderr]     25:     0x5fe76636c436 - std[6281e874092a0dfc]::panicking::catch_unwind::<i32, &dyn core[37ab4a9f28f6fd13]::ops::function::Fn<(), Output = i32> + core[37ab4a9f28f6fd13]::panic::unwind_safe::RefUnwindSafe + core[37ab4a9f28f6fd13]::marker::Sync>
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/panicking.rs:544:19
[INFO] [stderr]     26:     0x5fe76636c436 - std[6281e874092a0dfc]::panic::catch_unwind::<&dyn core[37ab4a9f28f6fd13]::ops::function::Fn<(), Output = i32> + core[37ab4a9f28f6fd13]::panic::unwind_safe::RefUnwindSafe + core[37ab4a9f28f6fd13]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x5fe76636c436 - std[6281e874092a0dfc]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x5fe76636c436 - std[6281e874092a0dfc]::panicking::catch_unwind::do_call::<std[6281e874092a0dfc]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/panicking.rs:581:40
[INFO] [stderr]     29:     0x5fe76636c436 - std[6281e874092a0dfc]::panicking::catch_unwind::<isize, std[6281e874092a0dfc]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/panicking.rs:544:19
[INFO] [stderr]     30:     0x5fe76636c436 - std[6281e874092a0dfc]::panic::catch_unwind::<std[6281e874092a0dfc]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x5fe76636c436 - std[6281e874092a0dfc]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/a394c9cd9ec93787f09a7ac445b14cc674a94549/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x5fe7662f5e91 - std[6281e874092a0dfc]::rt::lang_start::<()>
[INFO] [stderr]     33:     0x5fe7662fc745 - main
[INFO] [stderr]     34:     0x7e6010a7a1ca - <unknown>
[INFO] [stderr]     35:     0x7e6010a7a28b - __libc_start_main
[INFO] [stderr]     36:     0x5fe7662f4415 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "8c70bb6b0b091da708227d141ec91e5de69ae50a4a159d51aeedd0446ee553ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c70bb6b0b091da708227d141ec91e5de69ae50a4a159d51aeedd0446ee553ae", kill_on_drop: false }`
[INFO] [stdout] 8c70bb6b0b091da708227d141ec91e5de69ae50a4a159d51aeedd0446ee553ae