[INFO] cloning repository https://github.com/utopiabound/rpn-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/utopiabound/rpn-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futopiabound%2Frpn-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futopiabound%2Frpn-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b18b9ef96502eb1ccadb8573034b3e7155c53d46
[INFO] testing utopiabound/rpn-rs against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Futopiabound%2Frpn-rs" "/workspace/builds/worker-88/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-88/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/utopiabound/rpn-rs on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/utopiabound/rpn-rs
[INFO] finished tweaking git repo https://github.com/utopiabound/rpn-rs
[INFO] tweaked toml for git repo https://github.com/utopiabound/rpn-rs written to /workspace/builds/worker-88/source/Cargo.toml
[INFO] crate git repo https://github.com/utopiabound/rpn-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f1c99dbb1b5b42b7ce6458f897deb4bacd9289da6369818729bde107e4bea98
[INFO] running `Command { std: "docker" "start" "-a" "7f1c99dbb1b5b42b7ce6458f897deb4bacd9289da6369818729bde107e4bea98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f1c99dbb1b5b42b7ce6458f897deb4bacd9289da6369818729bde107e4bea98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f1c99dbb1b5b42b7ce6458f897deb4bacd9289da6369818729bde107e4bea98", kill_on_drop: false }`
[INFO] [stdout] 7f1c99dbb1b5b42b7ce6458f897deb4bacd9289da6369818729bde107e4bea98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f67202cddc7e18b817d07757943747ad4f2412603ccbff5a177aeb9b4dd61509
[INFO] running `Command { std: "docker" "start" "-a" "f67202cddc7e18b817d07757943747ad4f2412603ccbff5a177aeb9b4dd61509", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.6
[INFO] [stderr]    Compiling az v1.1.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling rug v1.13.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling fltk-sys v1.1.11
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling libmat v0.2.0 (https://github.com/utopiabound/libmat?branch=no-copy#2b9a074e)
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling fltk-derive v1.1.11
[INFO] [stderr] error: could not compile `fltk-derive`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name fltk_derive --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/fltk-derive-1.1.11/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 -C metadata=6fd6a3d64b5d2acd -C extra-filename=-6fd6a3d64b5d2acd --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern quote=/opt/rustwide/target/debug/deps/libquote-d3b4ff556168caa6.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-ecfba8f9b33aec5e.rlib --extern proc_macro --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f67202cddc7e18b817d07757943747ad4f2412603ccbff5a177aeb9b4dd61509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f67202cddc7e18b817d07757943747ad4f2412603ccbff5a177aeb9b4dd61509", kill_on_drop: false }`
[INFO] [stdout] f67202cddc7e18b817d07757943747ad4f2412603ccbff5a177aeb9b4dd61509