[INFO] cloning repository https://github.com/rust-tw/modernweb-booth-question
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-tw/modernweb-booth-question" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-tw%2Fmodernweb-booth-question", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-tw%2Fmodernweb-booth-question'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 390d1a968ce99a63afd01eeeb3f4068c99c5d045
[INFO] checking rust-tw/modernweb-booth-question against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-tw%2Fmodernweb-booth-question" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-tw/modernweb-booth-question on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rust-tw/modernweb-booth-question
[INFO] finished tweaking git repo https://github.com/rust-tw/modernweb-booth-question
[INFO] tweaked toml for git repo https://github.com/rust-tw/modernweb-booth-question written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-tw/modernweb-booth-question already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 005706276b220b225d3d96ab5382b3006e0ffaf054f5eaf9c9fb21548237faa5
[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" "005706276b220b225d3d96ab5382b3006e0ffaf054f5eaf9c9fb21548237faa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "005706276b220b225d3d96ab5382b3006e0ffaf054f5eaf9c9fb21548237faa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "005706276b220b225d3d96ab5382b3006e0ffaf054f5eaf9c9fb21548237faa5", kill_on_drop: false }`
[INFO] [stdout] 005706276b220b225d3d96ab5382b3006e0ffaf054f5eaf9c9fb21548237faa5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] c095456a66697fc1be027627c97d4ff5ff186855c7cbc8d6f01ee6a009842cf4
[INFO] running `Command { std: "docker" "start" "-a" "c095456a66697fc1be027627c97d4ff5ff186855c7cbc8d6f01ee6a009842cf4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.1
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling syn v1.0.4
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]     Checking rgb v0.8.14
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking modernweb-booth-question v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.89s
[INFO] running `Command { std: "docker" "inspect" "c095456a66697fc1be027627c97d4ff5ff186855c7cbc8d6f01ee6a009842cf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c095456a66697fc1be027627c97d4ff5ff186855c7cbc8d6f01ee6a009842cf4", kill_on_drop: false }`
[INFO] [stdout] c095456a66697fc1be027627c97d4ff5ff186855c7cbc8d6f01ee6a009842cf4