[INFO] cloning repository https://github.com/mfs/mercury
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mfs/mercury" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfs%2Fmercury", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfs%2Fmercury'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ee886d5e0237fac54bfa034222eae265b2425ff
[INFO] checking mfs/mercury against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfs%2Fmercury" "/workspace/builds/worker-111/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-111/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mfs/mercury 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/mfs/mercury
[INFO] finished tweaking git repo https://github.com/mfs/mercury
[INFO] tweaked toml for git repo https://github.com/mfs/mercury written to /workspace/builds/worker-111/source/Cargo.toml
[INFO] crate git repo https://github.com/mfs/mercury 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 core-foundation v0.2.0
[INFO] [stderr]   Downloaded core-foundation-sys v0.2.0
[INFO] [stderr]   Downloaded piston-viewport v0.2.0
[INFO] [stderr]   Downloaded cocoa v0.2.5
[INFO] [stderr]   Downloaded gl v0.5.2
[INFO] [stderr]   Downloaded vecmath v0.2.0
[INFO] [stderr]   Downloaded gleam v0.2.8
[INFO] [stderr]   Downloaded png v0.4.2
[INFO] [stderr]   Downloaded gcc v0.3.26
[INFO] [stderr]   Downloaded inflate v0.1.0
[INFO] [stderr]   Downloaded piston2d-graphics v0.15.0
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.2
[INFO] [stderr]   Downloaded gfx_core v0.1.2
[INFO] [stderr]   Downloaded gfx v0.9.1
[INFO] [stderr]   Downloaded draw_state v0.4.0
[INFO] [stderr]   Downloaded gfx_device_gl v0.8.2
[INFO] [stderr]   Downloaded draw_state v0.3.0
[INFO] [stderr]   Downloaded piston-float v0.2.0
[INFO] [stderr]   Downloaded x11-dl v2.3.1
[INFO] [stderr]   Downloaded pistoncore-window v0.15.0
[INFO] [stderr]   Downloaded objc v0.1.8
[INFO] [stderr]   Downloaded libz-sys v1.0.2
[INFO] [stderr]   Downloaded gfx_core v0.2.0
[INFO] [stderr]   Downloaded freetype-sys v0.3.1
[INFO] [stderr]   Downloaded gfx_gl v0.3.0
[INFO] [stderr]   Downloaded gfx v0.10.1
[INFO] [stderr]   Downloaded flate2 v0.2.13
[INFO] [stderr]   Downloaded euclid v0.6.4
[INFO] [stderr]   Downloaded image v0.7.0
[INFO] [stderr]   Downloaded piston-texture v0.3.0
[INFO] [stderr]   Downloaded piston-gfx_texture v0.10.0
[INFO] [stderr]   Downloaded freetype-rs v0.5.0
[INFO] [stderr]   Downloaded pistoncore-event_loop v0.18.0
[INFO] [stderr]   Downloaded tempfile v1.1.3
[INFO] [stderr]   Downloaded gif v0.7.0
[INFO] [stderr]   Downloaded gl_generator v0.4.2
[INFO] [stderr]   Downloaded fs2 v0.2.3
[INFO] [stderr]   Downloaded wayland-client v0.5.9
[INFO] [stderr]   Downloaded winapi v0.2.6
[INFO] [stderr]   Downloaded glutin v0.4.9
[INFO] [stderr]   Downloaded read_color v0.1.0
[INFO] [stderr]   Downloaded piston-shaders_graphics2d v0.2.0
[INFO] [stderr]   Downloaded piston_window v0.38.0
[INFO] [stderr]   Downloaded crossbeam v0.1.6
[INFO] [stderr]   Downloaded libloading v0.2.1
[INFO] [stderr]   Downloaded libc v0.2.8
[INFO] [stderr]   Downloaded lzw v0.9.0
[INFO] [stderr]   Downloaded num_cpus v0.2.11
[INFO] [stderr]   Downloaded serde v0.7.0
[INFO] [stderr]   Downloaded wayland-sys v0.5.9
[INFO] [stderr]   Downloaded wayland-scanner v0.5.8
[INFO] [stderr]   Downloaded wayland-window v0.2.2
[INFO] [stderr]   Downloaded pistoncore-input v0.8.1
[INFO] [stderr]   Downloaded pistoncore-glutin_window v0.21.0
[INFO] [stderr]   Downloaded shader_version v0.2.1
[INFO] [stderr]   Downloaded piston v0.18.0
[INFO] [stderr]   Downloaded piston2d-gfx_graphics v0.23.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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] ad53b9a34e2e68407de3769a694269575ef500c781a7f242ff392cd82c3b300f
[INFO] running `Command { std: "docker" "start" "-a" "ad53b9a34e2e68407de3769a694269575ef500c781a7f242ff392cd82c3b300f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad53b9a34e2e68407de3769a694269575ef500c781a7f242ff392cd82c3b300f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad53b9a34e2e68407de3769a694269575ef500c781a7f242ff392cd82c3b300f", kill_on_drop: false }`
[INFO] [stdout] ad53b9a34e2e68407de3769a694269575ef500c781a7f242ff392cd82c3b300f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-111/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] 21969daaff43dccb7ae41621dc33b772a26507202cadf617052cca643909e870
[INFO] running `Command { std: "docker" "start" "-a" "21969daaff43dccb7ae41621dc33b772a26507202cadf617052cca643909e870", 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" "21969daaff43dccb7ae41621dc33b772a26507202cadf617052cca643909e870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21969daaff43dccb7ae41621dc33b772a26507202cadf617052cca643909e870", kill_on_drop: false }`
[INFO] [stdout] 21969daaff43dccb7ae41621dc33b772a26507202cadf617052cca643909e870