[INFO] cloning repository https://github.com/firba1/trekrank
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/firba1/trekrank" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffirba1%2Ftrekrank", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffirba1%2Ftrekrank'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1216fb6250b5b2dabd38c0619589cd2a16eff054
[INFO] checking firba1/trekrank against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffirba1%2Ftrekrank" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/firba1/trekrank 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/firba1/trekrank
[INFO] finished tweaking git repo https://github.com/firba1/trekrank
[INFO] tweaked toml for git repo https://github.com/firba1/trekrank written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/firba1/trekrank 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]  Downloading crates ...
[INFO] [stderr]   Downloaded env_logger v0.5.3
[INFO] [stderr]   Downloaded termcolor v0.3.3
[INFO] [stderr]   Downloaded num-traits v0.2.0
[INFO] [stderr]   Downloaded mime_guess v1.8.3
[INFO] [stderr]   Downloaded params v0.8.0
[INFO] [stderr]   Downloaded safemem v0.1.1
[INFO] [stderr]   Downloaded twoway v0.1.7
[INFO] [stderr]   Downloaded multipart v0.13.6
[INFO] [stderr]   Downloaded wincolor v0.1.5
[INFO] [stderr]   Downloaded persistent v0.4.0
[INFO] [stderr]   Downloaded bodyparser v0.8.0
[INFO] [stderr]   Downloaded urlencoded v0.6.0
[INFO] [stderr]   Downloaded num-complex v0.1.42
[INFO] [stderr]   Downloaded askama v0.5.0
[INFO] [stderr]   Downloaded askama_shared v0.5.0
[INFO] [stderr]   Downloaded askama_derive v0.5.0
[INFO] [stderr]   Downloaded buf_redux v0.6.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 9e1261ecb67664088217d0d3b58650b77d5eefd0bcad84bda389c461978e2c77
[INFO] running `Command { std: "docker" "start" "-a" "9e1261ecb67664088217d0d3b58650b77d5eefd0bcad84bda389c461978e2c77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e1261ecb67664088217d0d3b58650b77d5eefd0bcad84bda389c461978e2c77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e1261ecb67664088217d0d3b58650b77d5eefd0bcad84bda389c461978e2c77", kill_on_drop: false }`
[INFO] [stdout] 9e1261ecb67664088217d0d3b58650b77d5eefd0bcad84bda389c461978e2c77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 491e6717a90119a37c3d5b5d13d609dfa6819ec1ab52926e2ff9a0893dc9cbe6
[INFO] running `Command { std: "docker" "start" "-a" "491e6717a90119a37c3d5b5d13d609dfa6819ec1ab52926e2ff9a0893dc9cbe6", kill_on_drop: false }`
[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" "491e6717a90119a37c3d5b5d13d609dfa6819ec1ab52926e2ff9a0893dc9cbe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "491e6717a90119a37c3d5b5d13d609dfa6819ec1ab52926e2ff9a0893dc9cbe6", kill_on_drop: false }`
[INFO] [stdout] 491e6717a90119a37c3d5b5d13d609dfa6819ec1ab52926e2ff9a0893dc9cbe6