[INFO] cloning repository https://github.com/robinst/criterion-example-string-inputs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/robinst/criterion-example-string-inputs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobinst%2Fcriterion-example-string-inputs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobinst%2Fcriterion-example-string-inputs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1aef57c9d288d0f554b9590df4ff77c34246f1c
[INFO] checking robinst/criterion-example-string-inputs against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobinst%2Fcriterion-example-string-inputs" "/workspace/builds/worker-103/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-103/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/robinst/criterion-example-string-inputs 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/robinst/criterion-example-string-inputs
[INFO] finished tweaking git repo https://github.com/robinst/criterion-example-string-inputs
[INFO] tweaked toml for git repo https://github.com/robinst/criterion-example-string-inputs written to /workspace/builds/worker-103/source/Cargo.toml
[INFO] crate git repo https://github.com/robinst/criterion-example-string-inputs 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 cfg-if v0.1.4
[INFO] [stderr]   Downloaded synstructure v0.6.1
[INFO] [stderr]   Downloaded failure_derive v0.1.1
[INFO] [stderr]   Downloaded failure v0.1.1
[INFO] [stderr]   Downloaded simplelog v0.5.2
[INFO] [stderr]   Downloaded serde_json v1.0.24
[INFO] [stderr]   Downloaded serde v1.0.70
[INFO] [stderr]   Downloaded lazy_static v1.0.2
[INFO] [stderr]   Downloaded proc-macro2 v0.4.9
[INFO] [stderr]   Downloaded thread_local v0.3.5
[INFO] [stderr]   Downloaded quote v0.6.4
[INFO] [stderr]   Downloaded backtrace-sys v0.1.23
[INFO] [stderr]   Downloaded pest_derive v1.0.7
[INFO] [stderr]   Downloaded syn v0.14.5
[INFO] [stderr]   Downloaded regex v1.0.2
[INFO] [stderr]   Downloaded serde_derive v1.0.70
[INFO] [stderr]   Downloaded csv v1.0.0
[INFO] [stderr]   Downloaded itertools-num v0.1.1
[INFO] [stderr]   Downloaded criterion-plot v0.2.4
[INFO] [stderr]   Downloaded criterion-stats v0.2.4
[INFO] [stderr]   Downloaded criterion v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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] a72da200f8b7a7f592cd93059f4ff2524935fa150f770ad21725f151baa66459
[INFO] running `Command { std: "docker" "start" "-a" "a72da200f8b7a7f592cd93059f4ff2524935fa150f770ad21725f151baa66459", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a72da200f8b7a7f592cd93059f4ff2524935fa150f770ad21725f151baa66459", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a72da200f8b7a7f592cd93059f4ff2524935fa150f770ad21725f151baa66459", kill_on_drop: false }`
[INFO] [stdout] a72da200f8b7a7f592cd93059f4ff2524935fa150f770ad21725f151baa66459
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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] e6ecab30351e6dace2878cb2c580010bd940f4cc82e5f530383005ee6d331a3d
[INFO] running `Command { std: "docker" "start" "-a" "e6ecab30351e6dace2878cb2c580010bd940f4cc82e5f530383005ee6d331a3d", 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" "e6ecab30351e6dace2878cb2c580010bd940f4cc82e5f530383005ee6d331a3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6ecab30351e6dace2878cb2c580010bd940f4cc82e5f530383005ee6d331a3d", kill_on_drop: false }`
[INFO] [stdout] e6ecab30351e6dace2878cb2c580010bd940f4cc82e5f530383005ee6d331a3d