[INFO] cloning repository https://github.com/ruby-on-rust/ruby-on-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ruby-on-rust/ruby-on-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fruby-on-rust%2Fruby-on-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fruby-on-rust%2Fruby-on-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 404687f73c7f5046c5999d0ef86487fb0071b71f
[INFO] checking ruby-on-rust/ruby-on-rust against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fruby-on-rust%2Fruby-on-rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ruby-on-rust/ruby-on-rust on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ruby-on-rust/ruby-on-rust
[INFO] finished tweaking git repo https://github.com/ruby-on-rust/ruby-on-rust
[INFO] tweaked toml for git repo https://github.com/ruby-on-rust/ruby-on-rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ruby-on-rust/ruby-on-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" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded strum v0.10.0
[INFO] [stderr]   Downloaded strum_macros v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 234c854e18651ef45361639b6c5eb87846a6e62bf62fcc2fcacdc31d528ca3a7
[INFO] running `Command { std: "docker" "start" "-a" "234c854e18651ef45361639b6c5eb87846a6e62bf62fcc2fcacdc31d528ca3a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "234c854e18651ef45361639b6c5eb87846a6e62bf62fcc2fcacdc31d528ca3a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "234c854e18651ef45361639b6c5eb87846a6e62bf62fcc2fcacdc31d528ca3a7", kill_on_drop: false }`
[INFO] [stdout] 234c854e18651ef45361639b6c5eb87846a6e62bf62fcc2fcacdc31d528ca3a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4161d4bc40e220bec0a34690edc27f7cbe5f6d17e93f77d545b5a3b739d8724
[INFO] running `Command { std: "docker" "start" "-a" "b4161d4bc40e220bec0a34690edc27f7cbe5f6d17e93f77d545b5a3b739d8724", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.17
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling regex v1.0.4
[INFO] [stderr]     Checking utf8-ranges v1.0.1
[INFO] [stderr]     Checking strum v0.10.0
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking maplit v1.0.1
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking memchr v2.0.2
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking uuid v0.7.1
[INFO] [stderr]    Compiling strum_macros v0.10.0
[INFO] [stderr]     Checking ruby_on_rust v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `ruby_on_rust` (lib test)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/506512391b1a75ae450d36c9420978402a91abcc/bin/rustc --crate-name ruby_on_rust --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values())' -C metadata=8dfb00dbf710385e -C extra-filename=-8dfb00dbf710385e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-576240087f81656c.rmeta --extern maplit=/opt/rustwide/target/debug/deps/libmaplit-2c7aff56badea9b3.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-a703f373b8dc24d4.rmeta --extern strum=/opt/rustwide/target/debug/deps/libstrum-13c3fc737811ea1a.rmeta --extern strum_macros=/opt/rustwide/target/debug/deps/libstrum_macros-724e630a2b29afac.so --extern uuid=/opt/rustwide/target/debug/deps/libuuid-f8c68c0892bfca22.rmeta --cap-lints=allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `ruby_on_rust` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/506512391b1a75ae450d36c9420978402a91abcc/bin/rustc --crate-name ruby_on_rust --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values())' -C metadata=bd4303eb63fa8821 -C extra-filename=-bd4303eb63fa8821 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-576240087f81656c.rmeta --extern maplit=/opt/rustwide/target/debug/deps/libmaplit-2c7aff56badea9b3.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-a703f373b8dc24d4.rmeta --extern strum=/opt/rustwide/target/debug/deps/libstrum-13c3fc737811ea1a.rmeta --extern strum_macros=/opt/rustwide/target/debug/deps/libstrum_macros-724e630a2b29afac.so --extern uuid=/opt/rustwide/target/debug/deps/libuuid-f8c68c0892bfca22.rmeta --cap-lints=allow` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "b4161d4bc40e220bec0a34690edc27f7cbe5f6d17e93f77d545b5a3b739d8724", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4161d4bc40e220bec0a34690edc27f7cbe5f6d17e93f77d545b5a3b739d8724", kill_on_drop: false }`
[INFO] [stdout] b4161d4bc40e220bec0a34690edc27f7cbe5f6d17e93f77d545b5a3b739d8724