[INFO] cloning repository https://github.com/rust-lang/crates.io
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-lang/crates.io" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang%2Fcrates.io", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang%2Fcrates.io'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13bb603b860160cf7f57ec12b6ab7348dded458c
[INFO] checking rust-lang/crates.io against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang%2Fcrates.io" "/workspace/builds/worker-81/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-81/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-lang/crates.io on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rust-lang/crates.io
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/rust-lang/crates.io
[INFO] tweaked toml for git repo https://github.com/rust-lang/crates.io written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-lang/crates.io already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbfc96c7409a9e6d56c6815b4bdba00c2336c9fd580cc5562195f9b0e9954357
[INFO] running `Command { std: "docker" "start" "-a" "cbfc96c7409a9e6d56c6815b4bdba00c2336c9fd580cc5562195f9b0e9954357", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbfc96c7409a9e6d56c6815b4bdba00c2336c9fd580cc5562195f9b0e9954357", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbfc96c7409a9e6d56c6815b4bdba00c2336c9fd580cc5562195f9b0e9954357", kill_on_drop: false }`
[INFO] [stdout] cbfc96c7409a9e6d56c6815b4bdba00c2336c9fd580cc5562195f9b0e9954357
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60c49cc7db24b4f5e6310277c5b1d195536dd528aad567fd41ef14eba05287d3
[INFO] running `Command { std: "docker" "start" "-a" "60c49cc7db24b4f5e6310277c5b1d195536dd528aad567fd41ef14eba05287d3", 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" "60c49cc7db24b4f5e6310277c5b1d195536dd528aad567fd41ef14eba05287d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60c49cc7db24b4f5e6310277c5b1d195536dd528aad567fd41ef14eba05287d3", kill_on_drop: false }`
[INFO] [stdout] 60c49cc7db24b4f5e6310277c5b1d195536dd528aad567fd41ef14eba05287d3