[INFO] cloning repository https://github.com/tristan-jl/dithering
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tristan-jl/dithering" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftristan-jl%2Fdithering", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftristan-jl%2Fdithering'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97fca0d0e7d57ff3b8643080a682c4e3a6d0636a
[INFO] checking tristan-jl/dithering/97fca0d0e7d57ff3b8643080a682c4e3a6d0636a against master#86a49fd71fecd25b0fd20247db0ba95eeceaba28 for pr-129543-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftristan-jl%2Fdithering" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/tristan-jl/dithering
[INFO] finished tweaking git repo https://github.com/tristan-jl/dithering
[INFO] tweaked toml for git repo https://github.com/tristan-jl/dithering written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tristan-jl/dithering on toolchain 86a49fd71fecd25b0fd20247db0ba95eeceaba28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+86a49fd71fecd25b0fd20247db0ba95eeceaba28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tristan-jl/dithering 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" "+86a49fd71fecd25b0fd20247db0ba95eeceaba28" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+86a49fd71fecd25b0fd20247db0ba95eeceaba28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d3c5a31dc712acdd651d5c8efe3e782ef8bc61c143721bc59e7e97a8e614775
[INFO] running `Command { std: "docker" "start" "-a" "6d3c5a31dc712acdd651d5c8efe3e782ef8bc61c143721bc59e7e97a8e614775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d3c5a31dc712acdd651d5c8efe3e782ef8bc61c143721bc59e7e97a8e614775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d3c5a31dc712acdd651d5c8efe3e782ef8bc61c143721bc59e7e97a8e614775", kill_on_drop: false }`
[INFO] [stdout] 6d3c5a31dc712acdd651d5c8efe3e782ef8bc61c143721bc59e7e97a8e614775
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+86a49fd71fecd25b0fd20247db0ba95eeceaba28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d7f28340dddbd204574360f90a064a0df11bb1c6a53835ac8e355e435ff98b0
[INFO] running `Command { std: "docker" "start" "-a" "1d7f28340dddbd204574360f90a064a0df11bb1c6a53835ac8e355e435ff98b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.11
[INFO] [stderr]    Compiling anyhow v1.0.99
[INFO] [stderr]     Checking bytemuck v1.23.2
[INFO] [stderr]     Checking itertools v0.14.0
[INFO] [stderr]     Checking crc32fast v1.5.0
[INFO] [stderr]     Checking flate2 v1.1.2
[INFO] [stderr]     Checking png v0.17.16
[INFO] [stderr]    Compiling indexmap v2.11.0
[INFO] [stderr]     Checking image v0.25.6
[INFO] [stderr]    Compiling serde_yaml v0.9.34+deprecated
[INFO] [stderr]    Compiling dithering v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `dithering v0.1.0 (/opt/rustwide/workdir)`
[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/dithering-5c3eb5744a0ee46a/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (225) panicked at build.rs:10:47:
[INFO] [stderr]   dir exists: Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x58b440a25f42 - std[99a77fcd2881e1e7]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x58b440a25f42 - std[99a77fcd2881e1e7]::backtrace_rs::backtrace::trace_unsynchronized::<std[99a77fcd2881e1e7]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x58b440a25f42 - std[99a77fcd2881e1e7]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x58b440a25f42 - <<std[99a77fcd2881e1e7]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[270d1373c8f6a07d]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x58b440a3a87a - <core[270d1373c8f6a07d]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x58b440a3a87a - core[270d1373c8f6a07d]::fmt::write
[INFO] [stderr]      6:     0x58b440a2aa76 - std[99a77fcd2881e1e7]::io::default_write_fmt::<std[99a77fcd2881e1e7]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x58b440a2aa76 - <std[99a77fcd2881e1e7]::sys::stdio::unix::Stderr as std[99a77fcd2881e1e7]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x58b440a0a56f - <std[99a77fcd2881e1e7]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x58b440a0a56f - std[99a77fcd2881e1e7]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x58b440a21281 - std[99a77fcd2881e1e7]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x58b440a2143b - std[99a77fcd2881e1e7]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x58b440a0a628 - std[99a77fcd2881e1e7]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x58b4409ff869 - std[99a77fcd2881e1e7]::sys::backtrace::__rust_end_short_backtrace::<std[99a77fcd2881e1e7]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x58b440a0afcd - __rustc[e1bf4ce096729b3a]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x58b440a3af8c - core[270d1373c8f6a07d]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x58b440a3ad02 - core[270d1373c8f6a07d]::result::unwrap_failed
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/core/src/result.rs:1867:5
[INFO] [stderr]     17:     0x58b44099ecde - <core[270d1373c8f6a07d]::result::Result<std[99a77fcd2881e1e7]::fs::ReadDir, std[99a77fcd2881e1e7]::io::error::Error>>::expect
[INFO] [stderr]     18:     0x58b4409a562e - build_script_build[73d0e5450d2e2b67]::write
[INFO] [stderr]     19:     0x58b4409a53f6 - build_script_build[73d0e5450d2e2b67]::main
[INFO] [stderr]     20:     0x58b4409a3523 - <fn() as core[270d1373c8f6a07d]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     21:     0x58b4409a1af6 - std[99a77fcd2881e1e7]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     22:     0x58b4409a2229 - std[99a77fcd2881e1e7]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     23:     0x58b440a203f6 - <&dyn core[270d1373c8f6a07d]::ops::function::Fn<(), Output = i32> + core[270d1373c8f6a07d]::panic::unwind_safe::RefUnwindSafe + core[270d1373c8f6a07d]::marker::Sync as core[270d1373c8f6a07d]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     24:     0x58b440a203f6 - std[99a77fcd2881e1e7]::panicking::catch_unwind::do_call::<&dyn core[270d1373c8f6a07d]::ops::function::Fn<(), Output = i32> + core[270d1373c8f6a07d]::panic::unwind_safe::RefUnwindSafe + core[270d1373c8f6a07d]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/panicking.rs:581:40
[INFO] [stderr]     25:     0x58b440a203f6 - std[99a77fcd2881e1e7]::panicking::catch_unwind::<i32, &dyn core[270d1373c8f6a07d]::ops::function::Fn<(), Output = i32> + core[270d1373c8f6a07d]::panic::unwind_safe::RefUnwindSafe + core[270d1373c8f6a07d]::marker::Sync>
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/panicking.rs:544:19
[INFO] [stderr]     26:     0x58b440a203f6 - std[99a77fcd2881e1e7]::panic::catch_unwind::<&dyn core[270d1373c8f6a07d]::ops::function::Fn<(), Output = i32> + core[270d1373c8f6a07d]::panic::unwind_safe::RefUnwindSafe + core[270d1373c8f6a07d]::marker::Sync, i32>
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x58b440a203f6 - std[99a77fcd2881e1e7]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x58b440a203f6 - std[99a77fcd2881e1e7]::panicking::catch_unwind::do_call::<std[99a77fcd2881e1e7]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/panicking.rs:581:40
[INFO] [stderr]     29:     0x58b440a203f6 - std[99a77fcd2881e1e7]::panicking::catch_unwind::<isize, std[99a77fcd2881e1e7]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/panicking.rs:544:19
[INFO] [stderr]     30:     0x58b440a203f6 - std[99a77fcd2881e1e7]::panic::catch_unwind::<std[99a77fcd2881e1e7]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x58b440a203f6 - std[99a77fcd2881e1e7]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/86a49fd71fecd25b0fd20247db0ba95eeceaba28/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x58b4409a1a01 - std[99a77fcd2881e1e7]::rt::lang_start::<()>
[INFO] [stderr]     33:     0x58b4409a7fe5 - main
[INFO] [stderr]     34:     0x70ec044741ca - <unknown>
[INFO] [stderr]     35:     0x70ec0447428b - __libc_start_main
[INFO] [stderr]     36:     0x58b440996665 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "1d7f28340dddbd204574360f90a064a0df11bb1c6a53835ac8e355e435ff98b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d7f28340dddbd204574360f90a064a0df11bb1c6a53835ac8e355e435ff98b0", kill_on_drop: false }`
[INFO] [stdout] 1d7f28340dddbd204574360f90a064a0df11bb1c6a53835ac8e355e435ff98b0