[INFO] cloning repository https://github.com/fallingyang/rust-lab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fallingyang/rust-lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffallingyang%2Frust-lab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffallingyang%2Frust-lab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f09ff76cb31c3c6a8048ecaac013ba59b0a4aa7
[INFO] checking fallingyang/rust-lab against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffallingyang%2Frust-lab" "/workspace/builds/worker-79/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-79/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fallingyang/rust-lab 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/fallingyang/rust-lab
[INFO] finished tweaking git repo https://github.com/fallingyang/rust-lab
[INFO] tweaked toml for git repo https://github.com/fallingyang/rust-lab written to /workspace/builds/worker-79/source/Cargo.toml
[INFO] crate git repo https://github.com/fallingyang/rust-lab 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 thiserror-impl v1.0.21
[INFO] [stderr]   Downloaded tower-discover v0.3.0
[INFO] [stderr]   Downloaded tower-timeout v0.3.0
[INFO] [stderr]   Downloaded tower-load v0.3.0
[INFO] [stderr]   Downloaded tower-load-shed v0.3.0
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.14
[INFO] [stderr]   Downloaded loom v0.3.6
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] [stderr]   Downloaded mio-serial v3.3.1
[INFO] [stderr]   Downloaded serialport v3.3.0
[INFO] [stderr]   Downloaded pollster v0.2.0
[INFO] [stderr]   Downloaded sharded-slab v0.1.0
[INFO] [stderr]   Downloaded log4rs v1.0.0
[INFO] [stderr]   Downloaded tower v0.3.1
[INFO] [stderr]   Downloaded tower-retry v0.3.0
[INFO] [stderr]   Downloaded tokio-macros v0.3.1
[INFO] [stderr]   Downloaded socket2 v0.3.15
[INFO] [stderr]   Downloaded cranelift-wasm v0.67.0
[INFO] [stderr]   Downloaded serde-value v0.7.0
[INFO] [stderr]   Downloaded tower-balance v0.3.0
[INFO] [stderr]   Downloaded tracing v0.1.21
[INFO] [stderr]   Downloaded tower-layer v0.3.0
[INFO] [stderr]   Downloaded wat v1.0.27
[INFO] [stderr]   Downloaded target-lexicon v0.11.1
[INFO] [stderr]   Downloaded cranelift-native v0.67.0
[INFO] [stderr]   Downloaded tonic-build v0.3.1
[INFO] [stderr]   Downloaded wasmtime-debug v0.20.0
[INFO] [stderr]   Downloaded wasmtime-cranelift v0.20.0
[INFO] [stderr]   Downloaded ordered-float v2.2.0
[INFO] [stderr]   Downloaded tower-ready-cache v0.3.1
[INFO] [stderr]   Downloaded rumqttc v0.6.0
[INFO] [stderr]   Downloaded cranelift-entity v0.67.0
[INFO] [stderr]   Downloaded tower-util v0.3.1
[INFO] [stderr]   Downloaded wasmtime-obj v0.20.0
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[INFO] [stderr]   Downloaded serde_yaml v0.8.14
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.67.0
[INFO] [stderr]   Downloaded tokio-modbus v0.4.0
[INFO] [stderr]   Downloaded generator v0.6.23
[INFO] [stderr]   Downloaded nng v1.0.0
[INFO] [stderr]   Downloaded yaml-rust v0.4.4
[INFO] [stderr]   Downloaded thiserror v1.0.21
[INFO] [stderr]   Downloaded tower-buffer v0.3.0
[INFO] [stderr]   Downloaded wasmtime-environ v0.20.0
[INFO] [stderr]   Downloaded tokio-serial v4.3.3
[INFO] [stderr]   Downloaded mqttbytes v0.3.0
[INFO] [stderr]   Downloaded wasmtime v0.20.0
[INFO] [stderr]   Downloaded wast v26.0.1
[INFO] [stderr]   Downloaded wasmtime-jit v0.20.0
[INFO] [stderr]   Downloaded cranelift-bforest v0.67.0
[INFO] [stderr]   Downloaded cranelift-frontend v0.67.0
[INFO] [stderr]   Downloaded tower-make v0.3.0
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.67.0
[INFO] [stderr]   Downloaded regalloc v0.0.30
[INFO] [stderr]   Downloaded IOKit-sys v0.1.5
[INFO] [stderr]   Downloaded tower-limit v0.3.1
[INFO] [stderr]   Downloaded scroll_derive v0.10.4
[INFO] [stderr]   Downloaded hyper v0.13.8
[INFO] [stderr]   Downloaded wasmtime-profiling v0.20.0
[INFO] [stderr]   Downloaded tonic v0.3.1
[INFO] [stderr]   Downloaded wasmtime-runtime v0.20.0
[INFO] [stderr]   Downloaded nng-sys v1.4.0-rc.0
[INFO] [stderr]   Downloaded cranelift-codegen v0.67.0
[INFO] [stderr]   Downloaded mini-redis v0.3.0
[INFO] [stderr]   Downloaded wasmtime-cache v0.20.0
[INFO] [stderr]   Downloaded tokio v0.3.2
[INFO] [stderr]   Downloaded quiche v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] 8b10a02040ff10857b89ac3fb7e89f9e1879a0251fc4b2384fdcbd4139cdbed6
[INFO] running `Command { std: "docker" "start" "-a" "8b10a02040ff10857b89ac3fb7e89f9e1879a0251fc4b2384fdcbd4139cdbed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b10a02040ff10857b89ac3fb7e89f9e1879a0251fc4b2384fdcbd4139cdbed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b10a02040ff10857b89ac3fb7e89f9e1879a0251fc4b2384fdcbd4139cdbed6", kill_on_drop: false }`
[INFO] [stdout] 8b10a02040ff10857b89ac3fb7e89f9e1879a0251fc4b2384fdcbd4139cdbed6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] 4616e1079cf4cbad911de1ae5cc1b9e808f64b0ff81834e5e98feacebc0de097
[INFO] running `Command { std: "docker" "start" "-a" "4616e1079cf4cbad911de1ae5cc1b9e808f64b0ff81834e5e98feacebc0de097", 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" "4616e1079cf4cbad911de1ae5cc1b9e808f64b0ff81834e5e98feacebc0de097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4616e1079cf4cbad911de1ae5cc1b9e808f64b0ff81834e5e98feacebc0de097", kill_on_drop: false }`
[INFO] [stdout] 4616e1079cf4cbad911de1ae5cc1b9e808f64b0ff81834e5e98feacebc0de097