[INFO] cloning repository https://github.com/AlienKevin/music-synthesizer-webview
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlienKevin/music-synthesizer-webview" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlienKevin%2Fmusic-synthesizer-webview", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlienKevin%2Fmusic-synthesizer-webview'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2650bca5fd29781f7e230197ab06b429bf3fe6c
[INFO] checking AlienKevin/music-synthesizer-webview against try#54cf65b8d066c082e536455049b95943cf30378f for pr-151920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlienKevin%2Fmusic-synthesizer-webview" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AlienKevin/music-synthesizer-webview
[INFO] finished tweaking git repo https://github.com/AlienKevin/music-synthesizer-webview
[INFO] tweaked toml for git repo https://github.com/AlienKevin/music-synthesizer-webview written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AlienKevin/music-synthesizer-webview on toolchain 54cf65b8d066c082e536455049b95943cf30378f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AlienKevin/music-synthesizer-webview 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" "+54cf65b8d066c082e536455049b95943cf30378f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37aca6fd13931a5052f81dcd3b4a96c25f1a1bf7417964ec9f37f452c9588e72
[INFO] running `Command { std: "docker" "start" "-a" "37aca6fd13931a5052f81dcd3b4a96c25f1a1bf7417964ec9f37f452c9588e72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37aca6fd13931a5052f81dcd3b4a96c25f1a1bf7417964ec9f37f452c9588e72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37aca6fd13931a5052f81dcd3b4a96c25f1a1bf7417964ec9f37f452c9588e72", kill_on_drop: false }`
[INFO] [stdout] 37aca6fd13931a5052f81dcd3b4a96c25f1a1bf7417964ec9f37f452c9588e72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+54cf65b8d066c082e536455049b95943cf30378f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71179f915c006186bd970116ea00ed7e1b2e41af17501c4282d59703f973907a
[INFO] running `Command { std: "docker" "start" "-a" "71179f915c006186bd970116ea00ed7e1b2e41af17501c4282d59703f973907a", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]     Checking boxfnonce v0.1.1
[INFO] [stderr]     Checking urlencoding v1.0.0
[INFO] [stderr]    Compiling webview-sys v0.3.3
[INFO] [stderr] error: failed to run custom build command for `webview-sys v0.3.3`
[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/webview-sys-06b37d1efa278b1d/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (95) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/webview-sys-0.3.3/build.rs:44:14:
[INFO] [stderr]   called `Result::unwrap()` on an `Err` value: Failure { command: "PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=\"1\" PKG_CONFIG_ALLOW_SYSTEM_LIBS=\"1\" \"pkg-config\" \"--libs\" \"--cflags\" \"webkit2gtk-4.0\" \"webkit2gtk-4.0 >= 2.8\"", output: Output { status: ExitStatus(unix_wait_status(256)), stdout: "", stderr: "Package webkit2gtk-4.0 was not found in the pkg-config search path.\nPerhaps you should add the directory containing `webkit2gtk-4.0.pc'\nto the PKG_CONFIG_PATH environment variable\nPackage 'webkit2gtk-4.0', required by 'virtual:world', not found\nPackage 'webkit2gtk-4.0', required by 'virtual:world', not found\n" } }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5cbbb3f64d9a - std[2b8fb8c27541df22]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5cbbb3f64d9a - std[2b8fb8c27541df22]::backtrace_rs::backtrace::trace_unsynchronized::<std[2b8fb8c27541df22]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5cbbb3f64d9a - std[2b8fb8c27541df22]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x5cbbb3f64d9a - <<std[2b8fb8c27541df22]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[ce8ad42acf3c47be]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x5cbbb3f78bba - <core[ce8ad42acf3c47be]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x5cbbb3f78bba - core[ce8ad42acf3c47be]::fmt::write
[INFO] [stderr]      6:     0x5cbbb3f6b172 - std[2b8fb8c27541df22]::io::default_write_fmt::<std[2b8fb8c27541df22]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5cbbb3f6b172 - <std[2b8fb8c27541df22]::sys::stdio::unix::Stderr as std[2b8fb8c27541df22]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x5cbbb3f4570f - <std[2b8fb8c27541df22]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x5cbbb3f4570f - std[2b8fb8c27541df22]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x5cbbb3f5edd1 - std[2b8fb8c27541df22]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x5cbbb3f5ef8b - std[2b8fb8c27541df22]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x5cbbb3f457c8 - std[2b8fb8c27541df22]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x5cbbb3f3a8a9 - std[2b8fb8c27541df22]::sys::backtrace::__rust_end_short_backtrace::<std[2b8fb8c27541df22]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x5cbbb3f461fd - __rustc[23a7528c93bdc9b2]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x5cbbb3f792cc - core[ce8ad42acf3c47be]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x5cbbb3f79042 - core[ce8ad42acf3c47be]::result::unwrap_failed
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/core/src/result.rs:1867:5
[INFO] [stderr]     17:     0x5cbbb3edbf6c - build_script_build[b0344a3cb4c7b27e]::main
[INFO] [stderr]     18:     0x5cbbb3edcc93 - <fn() as core[ce8ad42acf3c47be]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     19:     0x5cbbb3edb826 - std[2b8fb8c27541df22]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     20:     0x5cbbb3edb879 - std[2b8fb8c27541df22]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     21:     0x5cbbb3f5dec6 - <&dyn core[ce8ad42acf3c47be]::ops::function::Fn<(), Output = i32> + core[ce8ad42acf3c47be]::marker::Sync + core[ce8ad42acf3c47be]::panic::unwind_safe::RefUnwindSafe as core[ce8ad42acf3c47be]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     22:     0x5cbbb3f5dec6 - std[2b8fb8c27541df22]::panicking::catch_unwind::do_call::<&dyn core[ce8ad42acf3c47be]::ops::function::Fn<(), Output = i32> + core[ce8ad42acf3c47be]::marker::Sync + core[ce8ad42acf3c47be]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/panicking.rs:581:40
[INFO] [stderr]     23:     0x5cbbb3f5dec6 - std[2b8fb8c27541df22]::panicking::catch_unwind::<i32, &dyn core[ce8ad42acf3c47be]::ops::function::Fn<(), Output = i32> + core[ce8ad42acf3c47be]::marker::Sync + core[ce8ad42acf3c47be]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/panicking.rs:544:19
[INFO] [stderr]     24:     0x5cbbb3f5dec6 - std[2b8fb8c27541df22]::panic::catch_unwind::<&dyn core[ce8ad42acf3c47be]::ops::function::Fn<(), Output = i32> + core[ce8ad42acf3c47be]::marker::Sync + core[ce8ad42acf3c47be]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/panic.rs:359:14
[INFO] [stderr]     25:     0x5cbbb3f5dec6 - std[2b8fb8c27541df22]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/rt.rs:175:24
[INFO] [stderr]     26:     0x5cbbb3f5dec6 - std[2b8fb8c27541df22]::panicking::catch_unwind::do_call::<std[2b8fb8c27541df22]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/panicking.rs:581:40
[INFO] [stderr]     27:     0x5cbbb3f5dec6 - std[2b8fb8c27541df22]::panicking::catch_unwind::<isize, std[2b8fb8c27541df22]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/panicking.rs:544:19
[INFO] [stderr]     28:     0x5cbbb3f5dec6 - std[2b8fb8c27541df22]::panic::catch_unwind::<std[2b8fb8c27541df22]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/panic.rs:359:14
[INFO] [stderr]     29:     0x5cbbb3f5dec6 - std[2b8fb8c27541df22]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/std/src/rt.rs:171:5
[INFO] [stderr]     30:     0x5cbbb3edb7f1 - std[2b8fb8c27541df22]::rt::lang_start::<()>
[INFO] [stderr]     31:     0x5cbbb3edccf5 - main
[INFO] [stderr]     32:     0x7d8ba76a01ca - <unknown>
[INFO] [stderr]     33:     0x7d8ba76a028b - __libc_start_main
[INFO] [stderr]     34:     0x5cbbb3edb1d5 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "71179f915c006186bd970116ea00ed7e1b2e41af17501c4282d59703f973907a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71179f915c006186bd970116ea00ed7e1b2e41af17501c4282d59703f973907a", kill_on_drop: false }`
[INFO] [stdout] 71179f915c006186bd970116ea00ed7e1b2e41af17501c4282d59703f973907a
