[INFO] fetching crate x79d8 0.2.0...
[INFO] checking x79d8-0.2.0 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate x79d8 0.2.0 into /workspace/builds/worker-91/source
[INFO] validating manifest of crates.io crate x79d8 0.2.0 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 crates.io crate x79d8 0.2.0
[INFO] finished tweaking crates.io crate x79d8 0.2.0
[INFO] tweaked toml for crates.io crate x79d8 0.2.0 written to /workspace/builds/worker-91/source/Cargo.toml
[INFO] crate crates.io crate x79d8 0.2.0 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot_core v0.8.1
[INFO] [stderr]   Downloaded smallvec v1.5.1
[INFO] [stderr]   Downloaded protobuf v2.18.1
[INFO] [stderr]   Downloaded cfb-mode v0.6.0
[INFO] [stderr]   Downloaded pbkdf2 v0.6.0
[INFO] [stderr]   Downloaded salsa20 v0.7.2
[INFO] [stderr]   Downloaded tokio-util v0.4.0
[INFO] [stderr]   Downloaded path_abs v0.5.0
[INFO] [stderr]   Downloaded scrypt v0.5.0
[INFO] [stderr]   Downloaded prometheus v0.10.0
[INFO] [stderr]   Downloaded slog-stdlog v4.1.0
[INFO] [stderr]   Downloaded tokio-macros v0.3.1
[INFO] [stderr]   Downloaded tokio v0.3.5
[INFO] [stderr]   Downloaded esl01-minibytes v0.2.0
[INFO] [stderr]   Downloaded proxy-protocol v0.1.1
[INFO] [stderr]   Downloaded tokio-rustls v0.21.1
[INFO] [stderr]   Downloaded mio v0.7.6
[INFO] [stderr]   Downloaded libunftp v0.14.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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] eeb3ba58365fe5c20e40012de354f86ed923a118c3551df17d77ef14b4bd62e4
[INFO] running `Command { std: "docker" "start" "-a" "eeb3ba58365fe5c20e40012de354f86ed923a118c3551df17d77ef14b4bd62e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eeb3ba58365fe5c20e40012de354f86ed923a118c3551df17d77ef14b4bd62e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eeb3ba58365fe5c20e40012de354f86ed923a118c3551df17d77ef14b4bd62e4", kill_on_drop: false }`
[INFO] [stdout] eeb3ba58365fe5c20e40012de354f86ed923a118c3551df17d77ef14b4bd62e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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] 01f546db6d9ea37bdb755393a92e1d175e4b4593fc3afef6ad313b54c662c844
[INFO] running `Command { std: "docker" "start" "-a" "01f546db6d9ea37bdb755393a92e1d175e4b4593fc3afef6ad313b54c662c844", 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]     Blocking waiting for file lock on package cache
[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" "01f546db6d9ea37bdb755393a92e1d175e4b4593fc3afef6ad313b54c662c844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01f546db6d9ea37bdb755393a92e1d175e4b4593fc3afef6ad313b54c662c844", kill_on_drop: false }`
[INFO] [stdout] 01f546db6d9ea37bdb755393a92e1d175e4b4593fc3afef6ad313b54c662c844