[INFO] cloning repository https://github.com/fnichol/limitation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fnichol/limitation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffnichol%2Flimitation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffnichol%2Flimitation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ea354ab4c770fe8c3a01324daf4f531a08eddaca
[INFO] checking fnichol/limitation against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffnichol%2Flimitation" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fnichol/limitation 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/fnichol/limitation
[INFO] finished tweaking git repo https://github.com/fnichol/limitation
[INFO] tweaked toml for git repo https://github.com/fnichol/limitation written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/fnichol/limitation 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]     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 tokio-reactor v0.1.10
[INFO] [stderr]   Downloaded typed-builder v0.3.0
[INFO] [stderr]   Downloaded hashbrown v0.5.0
[INFO] [stderr]   Downloaded unicase v2.5.1
[INFO] [stderr]   Downloaded structopt-derive v0.3.3
[INFO] [stderr]   Downloaded mime v0.3.14
[INFO] [stderr]   Downloaded structopt v0.3.3
[INFO] [stderr]   Downloaded threadpool v1.7.1
[INFO] [stderr]   Downloaded actix-http v0.2.10
[INFO] [stderr]   Downloaded actix-testing v0.1.0
[INFO] [stderr]   Downloaded miniz-sys v0.1.12
[INFO] [stderr]   Downloaded actix-connect v0.2.5
[INFO] [stderr]   Downloaded winreg v0.6.2
[INFO] [stderr]   Downloaded actix-utils v0.4.7
[INFO] [stderr]   Downloaded actix-web v1.0.8
[INFO] [stderr]   Downloaded signal-hook-registry v1.1.1
[INFO] [stderr]   Downloaded indexmap v1.2.0
[INFO] [stderr]   Downloaded socket2 v0.3.11
[INFO] [stderr]   Downloaded derive_more v0.15.0
[INFO] [stderr]   Downloaded actix-rt v0.2.5
[INFO] [stderr]   Downloaded copyless v0.1.4
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.16
[INFO] [stderr]   Downloaded signal-hook v0.1.10
[INFO] [stderr]   Downloaded ipconfig v0.2.1
[INFO] [stderr]   Downloaded http v0.1.19
[INFO] [stderr]   Downloaded awc v0.2.7
[INFO] [stderr]   Downloaded miniz_oxide v0.3.3
[INFO] [stderr]   Downloaded enum-as-inner v0.2.1
[INFO] [stderr]   Downloaded flate2 v1.0.12
[INFO] [stderr]   Downloaded trust-dns-proto v0.7.4
[INFO] [stderr]   Downloaded arc-swap v0.4.3
[INFO] [stderr]   Downloaded trust-dns-resolver v0.11.1
[INFO] [stderr]   Downloaded redis v0.13.0
[INFO] [stderr]   Downloaded actix-service v0.4.2
[INFO] [stderr]   Downloaded actix-router v0.1.5
[INFO] [stderr]   Downloaded actix-threadpool v0.1.2
[INFO] [stderr]   Downloaded actix-server v0.6.1
[INFO] [stderr]   Downloaded actix-web-codegen v0.1.3
[INFO] [stderr]   Downloaded actix-codec v0.1.2
[INFO] [stderr]   Downloaded actix-server-config v0.1.2
[INFO] [stderr]   Downloaded synstructure v0.12.1
[INFO] [stderr]   Downloaded encoding_rs v0.8.20
[INFO] [stderr]   Downloaded widestring v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 2aba59505cc1f0658cb6496915fe23deab0a6952adc22fa44cb48001669b4c42
[INFO] running `Command { std: "docker" "start" "-a" "2aba59505cc1f0658cb6496915fe23deab0a6952adc22fa44cb48001669b4c42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2aba59505cc1f0658cb6496915fe23deab0a6952adc22fa44cb48001669b4c42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2aba59505cc1f0658cb6496915fe23deab0a6952adc22fa44cb48001669b4c42", kill_on_drop: false }`
[INFO] [stdout] 2aba59505cc1f0658cb6496915fe23deab0a6952adc22fa44cb48001669b4c42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] e3ba964bd7d5589260683f849097d273f565c7401472776ab95686108ac1eeed
[INFO] running `Command { std: "docker" "start" "-a" "e3ba964bd7d5589260683f849097d273f565c7401472776ab95686108ac1eeed", 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" "e3ba964bd7d5589260683f849097d273f565c7401472776ab95686108ac1eeed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3ba964bd7d5589260683f849097d273f565c7401472776ab95686108ac1eeed", kill_on_drop: false }`
[INFO] [stdout] e3ba964bd7d5589260683f849097d273f565c7401472776ab95686108ac1eeed