[INFO] cloning repository https://github.com/nstoddard/lambda-calculus
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nstoddard/lambda-calculus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnstoddard%2Flambda-calculus", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnstoddard%2Flambda-calculus'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 835107d710d62bf728ab3624b480702b49822a68
[INFO] checking nstoddard/lambda-calculus against try#15a786332e2f0dd343b226ab6bb8ec028a350f73 for pr-81782
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnstoddard%2Flambda-calculus" "/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/nstoddard/lambda-calculus on toolchain 15a786332e2f0dd343b226ab6bb8ec028a350f73
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nstoddard/lambda-calculus
[INFO] finished tweaking git repo https://github.com/nstoddard/lambda-calculus
[INFO] tweaked toml for git repo https://github.com/nstoddard/lambda-calculus written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/nstoddard/lambda-calculus already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cfg-match v0.2.1
[INFO] [stderr]   Downloaded dirs-sys-next v0.1.1
[INFO] [stderr]   Downloaded yew-macro v0.17.0
[INFO] [stderr]   Downloaded hashbag v0.1.3
[INFO] [stderr]   Downloaded gloo-file v0.1.0
[INFO] [stderr]   Downloaded dirs-next v1.0.2
[INFO] [stderr]   Downloaded gloo v0.2.1
[INFO] [stderr]   Downloaded syn v1.0.46
[INFO] [stderr]   Downloaded anyhow v1.0.33
[INFO] [stderr]   Downloaded yew v0.17.4
[INFO] [stderr]   Downloaded simple-error v0.2.2
[INFO] [stderr]   Downloaded directories-next v1.0.3
[INFO] [stderr]   Downloaded gloo-console-timer v0.1.0
[INFO] [stderr]   Downloaded gloo-events v0.1.1
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f6b91e4eb9e6649703d92b2f92b3a8796d97986a303cd8bc2e2a59a4048d4df
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3f6b91e4eb9e6649703d92b2f92b3a8796d97986a303cd8bc2e2a59a4048d4df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f6b91e4eb9e6649703d92b2f92b3a8796d97986a303cd8bc2e2a59a4048d4df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f6b91e4eb9e6649703d92b2f92b3a8796d97986a303cd8bc2e2a59a4048d4df", kill_on_drop: false }`
[INFO] [stdout] 3f6b91e4eb9e6649703d92b2f92b3a8796d97986a303cd8bc2e2a59a4048d4df
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5819f8e60e8306428e59b4cce33488f976884cbaf45495de5608dc2db9e255cd
[INFO] running `Command { std: "docker" "start" "-a" "5819f8e60e8306428e59b4cce33488f976884cbaf45495de5608dc2db9e255cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking simple-error v0.2.2
[INFO] [stderr]     Checking hashbag v0.1.3
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking dirs-sys-next v0.1.1
[INFO] [stderr]     Checking dirs-next v1.0.2
[INFO] [stderr]     Checking directories-next v1.0.3
[INFO] [stderr]     Checking rustyline v6.3.0
[INFO] [stderr]     Checking lambda-calculus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.79s
[INFO] running `Command { std: "docker" "inspect" "5819f8e60e8306428e59b4cce33488f976884cbaf45495de5608dc2db9e255cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5819f8e60e8306428e59b4cce33488f976884cbaf45495de5608dc2db9e255cd", kill_on_drop: false }`
[INFO] [stdout] 5819f8e60e8306428e59b4cce33488f976884cbaf45495de5608dc2db9e255cd