[INFO] cloning repository https://github.com/macroexpansion/concurrency-exercise
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/macroexpansion/concurrency-exercise" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmacroexpansion%2Fconcurrency-exercise", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmacroexpansion%2Fconcurrency-exercise'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66e35f6ecb6ca33a1786b855025093db4bcec266
[INFO] documenting macroexpansion/concurrency-exercise against 1.86.0 for beta-1.87-rustdoc-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmacroexpansion%2Fconcurrency-exercise" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/macroexpansion/concurrency-exercise on toolchain 1.86.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.86.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/macroexpansion/concurrency-exercise
[INFO] finished tweaking git repo https://github.com/macroexpansion/concurrency-exercise
[INFO] tweaked toml for git repo https://github.com/macroexpansion/concurrency-exercise written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/macroexpansion/concurrency-exercise already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.86.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
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[INFO] [stderr]   Downloaded syn v1.0.101
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[INFO] [stderr]   Downloaded windows-sys v0.36.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4ed7df210c9aa60073fdf9b7c7aa8b8639a677b60a19f3a8408dc23934689f4
[INFO] running `Command { std: "docker" "start" "-a" "d4ed7df210c9aa60073fdf9b7c7aa8b8639a677b60a19f3a8408dc23934689f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4ed7df210c9aa60073fdf9b7c7aa8b8639a677b60a19f3a8408dc23934689f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4ed7df210c9aa60073fdf9b7c7aa8b8639a677b60a19f3a8408dc23934689f4", kill_on_drop: false }`
[INFO] [stdout] d4ed7df210c9aa60073fdf9b7c7aa8b8639a677b60a19f3a8408dc23934689f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1.86.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a74110687bed2b4398786487f2f2713b022dbffefd632ad7f680008f1e281173
[INFO] running `Command { std: "docker" "start" "-a" "a74110687bed2b4398786487f2f2713b022dbffefd632ad7f680008f1e281173", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking futures-io v0.3.24
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling async-trait v0.1.57
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling futures-macro v0.3.24
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.37
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking futures-executor v0.3.24
[INFO] [stderr]     Checking futures v0.3.24
[INFO] [stderr]  Documenting concurrency-exercise-01 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.76s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/concurrency_exercise_01/index.html
[INFO] running `Command { std: "docker" "inspect" "a74110687bed2b4398786487f2f2713b022dbffefd632ad7f680008f1e281173", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a74110687bed2b4398786487f2f2713b022dbffefd632ad7f680008f1e281173", kill_on_drop: false }`
[INFO] [stdout] a74110687bed2b4398786487f2f2713b022dbffefd632ad7f680008f1e281173
