[INFO] cloning repository https://github.com/veniamin-ilmer/compare-speed
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/veniamin-ilmer/compare-speed" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fveniamin-ilmer%2Fcompare-speed", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fveniamin-ilmer%2Fcompare-speed'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9bda3f9dc6f8905569efb96391505d8f259fb00d
[INFO] testing veniamin-ilmer/compare-speed against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fveniamin-ilmer%2Fcompare-speed" "/workspace/builds/worker-84/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-84/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/veniamin-ilmer/compare-speed on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/veniamin-ilmer/compare-speed
[INFO] finished tweaking git repo https://github.com/veniamin-ilmer/compare-speed
[INFO] tweaked toml for git repo https://github.com/veniamin-ilmer/compare-speed written to /workspace/builds/worker-84/source/Cargo.toml
[INFO] crate git repo https://github.com/veniamin-ilmer/compare-speed already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa7dcd07e5b5e3fdf32658eb079ce125793e444d2c4b317e97133e41878cc621
[INFO] running `Command { std: "docker" "start" "-a" "fa7dcd07e5b5e3fdf32658eb079ce125793e444d2c4b317e97133e41878cc621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa7dcd07e5b5e3fdf32658eb079ce125793e444d2c4b317e97133e41878cc621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa7dcd07e5b5e3fdf32658eb079ce125793e444d2c4b317e97133e41878cc621", kill_on_drop: false }`
[INFO] [stdout] fa7dcd07e5b5e3fdf32658eb079ce125793e444d2c4b317e97133e41878cc621
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3afff889fdd99bb8ef2952592c7d865aa12fd81bd64f182a25074515811cc3e2
[INFO] running `Command { std: "docker" "start" "-a" "3afff889fdd99bb8ef2952592c7d865aa12fd81bd64f182a25074515811cc3e2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]    Compiling rustc-demangle v0.1.11
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling ryu-ecmascript v0.1.1
[INFO] [stderr]    Compiling simd v0.2.3
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling crunchy v0.2.1
[INFO] [stderr]    Compiling byte-tools v0.3.0
[INFO] [stderr]    Compiling encoding_rs v0.8.13
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling approx v0.1.1
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling jetscii v0.4.3
[INFO] [stderr]    Compiling libm v0.1.2
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling unchecked-index v0.2.2
[INFO] [stderr]    Compiling opaque-debug v0.2.1
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling rustc-hex v2.0.1
[INFO] [stderr]    Compiling xmlparser v0.8.0
[INFO] [stderr]    Compiling static_assertions v0.2.5
[INFO] [stderr]    Compiling defmac v0.1.3
[INFO] [stderr]    Compiling dummy_xml v0.1.6
[INFO] [stderr]    Compiling rust_quicksort v0.1.0
[INFO] [stderr]    Compiling json v0.11.13
[INFO] [stderr]    Compiling quick_sort v0.2.1
[INFO] [stderr]    Compiling cycle-sort v0.2.0
[INFO] [stderr]    Compiling afsort v0.3.0
[INFO] [stderr]    Compiling dmsort v1.0.0
[INFO] [stderr]    Compiling ironsort v0.1.0
[INFO] [stderr]    Compiling rdxsort v0.3.0
[INFO] [stderr]    Compiling bencher v0.1.5
[INFO] [stderr]    Compiling simple_csv v0.0.15
[INFO] [stderr]    Compiling md5 v0.6.1
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr] error: could not compile `rustc-serialize`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name rustc_serialize /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.24/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=bdf045fabfc65aef -C extra-filename=-bdf045fabfc65aef --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --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" "3afff889fdd99bb8ef2952592c7d865aa12fd81bd64f182a25074515811cc3e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3afff889fdd99bb8ef2952592c7d865aa12fd81bd64f182a25074515811cc3e2", kill_on_drop: false }`
[INFO] [stdout] 3afff889fdd99bb8ef2952592c7d865aa12fd81bd64f182a25074515811cc3e2