[INFO] cloning repository https://github.com/jtdubs/rust-light
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jtdubs/rust-light" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtdubs%2Frust-light", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtdubs%2Frust-light'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 29c5cffd887efe5d3fef205c87f2dc529cacc303
[INFO] checking jtdubs/rust-light against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtdubs%2Frust-light" "/workspace/builds/worker-39/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-39/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jtdubs/rust-light on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jtdubs/rust-light
[INFO] finished tweaking git repo https://github.com/jtdubs/rust-light
[INFO] tweaked toml for git repo https://github.com/jtdubs/rust-light written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] crate git repo https://github.com/jtdubs/rust-light already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded crossbeam-utils v0.6.5
[INFO] [stderr]   Downloaded quickcheck_macros v0.8.0
[INFO] [stderr]   Downloaded crossbeam-epoch v0.7.1
[INFO] [stderr]   Downloaded crossbeam-deque v0.6.3
[INFO] [stderr]   Downloaded rayon v1.1.0
[INFO] [stderr]   Downloaded quickcheck v0.8.5
[INFO] [stderr]   Downloaded arrayvec v0.4.10
[INFO] [stderr]   Downloaded env_logger v0.6.1
[INFO] [stderr]   Downloaded ucd-util v0.1.3
[INFO] [stderr]   Downloaded either v1.5.2
[INFO] [stderr]   Downloaded png v0.14.1
[INFO] [stderr]   Downloaded humantime v1.2.0
[INFO] [stderr]   Downloaded aho-corasick v0.7.3
[INFO] [stderr]   Downloaded log v0.4.6
[INFO] [stderr]   Downloaded regex-syntax v0.6.7
[INFO] [stderr]   Downloaded tiff v0.2.2
[INFO] [stderr]   Downloaded utf8-ranges v1.0.3
[INFO] [stderr]   Downloaded regex v1.1.7
[INFO] [stderr]   Downloaded wincolor v1.0.1
[INFO] [stderr]   Downloaded syn v0.15.36
[INFO] [stderr]   Downloaded redox_syscall v0.1.54
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.15
[INFO] [stderr]   Downloaded adler32 v1.0.3
[INFO] [stderr]   Downloaded termion v1.5.3
[INFO] [stderr]   Downloaded quote v0.6.12
[INFO] [stderr]   Downloaded rayon-core v1.5.0
[INFO] [stderr]   Downloaded gif v0.10.2
[INFO] [stderr]   Downloaded deflate v0.7.19
[INFO] [stderr]   Downloaded memchr v2.2.0
[INFO] [stderr]   Downloaded image v0.21.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fbfb0f548e75d8154dbb98d64bd39b882eab3013d9496892447d4a0bb69d9ab
[INFO] running `Command { std: "docker" "start" "-a" "9fbfb0f548e75d8154dbb98d64bd39b882eab3013d9496892447d4a0bb69d9ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fbfb0f548e75d8154dbb98d64bd39b882eab3013d9496892447d4a0bb69d9ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fbfb0f548e75d8154dbb98d64bd39b882eab3013d9496892447d4a0bb69d9ab", kill_on_drop: false }`
[INFO] [stdout] 9fbfb0f548e75d8154dbb98d64bd39b882eab3013d9496892447d4a0bb69d9ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48755b71de692e62a2f0c7e5c852f6832a4a9f4f0841a447ad703765e075851d
[INFO] running `Command { std: "docker" "start" "-a" "48755b71de692e62a2f0c7e5c852f6832a4a9f4f0841a447ad703765e075851d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: failed to create jobserver
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to increase jobserver pipe capacity from 4096 to 8192; jobserver otherwise might deadlock
[INFO] running `Command { std: "docker" "inspect" "48755b71de692e62a2f0c7e5c852f6832a4a9f4f0841a447ad703765e075851d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48755b71de692e62a2f0c7e5c852f6832a4a9f4f0841a447ad703765e075851d", kill_on_drop: false }`
[INFO] [stdout] 48755b71de692e62a2f0c7e5c852f6832a4a9f4f0841a447ad703765e075851d