[INFO] updating cached repository https://github.com/emberian/how-long-does-it-take-to-spawn-a-thread
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d17447f61ecee8ac90c5b99404095877d9fd0a20
[INFO] documenting emberian/how-long-does-it-take-to-spawn-a-thread against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femberian%2Fhow-long-does-it-take-to-spawn-a-thread" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/emberian/how-long-does-it-take-to-spawn-a-thread on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/emberian/how-long-does-it-take-to-spawn-a-thread
[INFO] finished tweaking git repo https://github.com/emberian/how-long-does-it-take-to-spawn-a-thread
[INFO] tweaked toml for git repo https://github.com/emberian/how-long-does-it-take-to-spawn-a-thread written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/emberian/how-long-does-it-take-to-spawn-a-thread already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: file found to be present in multiple build targets: /workspace/builds/worker-5/source/src/main.rs
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab4fac4319850f74d213a547fe2cfb3caa95b237e03babeccf3b445b0295f59f
[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" "ab4fac4319850f74d213a547fe2cfb3caa95b237e03babeccf3b445b0295f59f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab4fac4319850f74d213a547fe2cfb3caa95b237e03babeccf3b445b0295f59f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab4fac4319850f74d213a547fe2cfb3caa95b237e03babeccf3b445b0295f59f", kill_on_drop: false }`
[INFO] [stdout] ab4fac4319850f74d213a547fe2cfb3caa95b237e03babeccf3b445b0295f59f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8fa6d368807baba4b8fb4c5f399df81d4182d9eeb9b341bc493c90022b3a8e9
[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" "a8fa6d368807baba4b8fb4c5f399df81d4182d9eeb9b341bc493c90022b3a8e9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/src/main.rs
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]    Compiling syn v1.0.27
[INFO] [stderr]     Checking oorandom v11.1.1
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking criterion-plot v0.4.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking tinytemplate v1.0.4
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]     Checking criterion v0.3.2
[INFO] [stderr]  Documenting how-long-does-it-take-to-spawn-a-thread v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.57s
[INFO] running `Command { std: "docker" "inspect" "a8fa6d368807baba4b8fb4c5f399df81d4182d9eeb9b341bc493c90022b3a8e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8fa6d368807baba4b8fb4c5f399df81d4182d9eeb9b341bc493c90022b3a8e9", kill_on_drop: false }`
[INFO] [stdout] a8fa6d368807baba4b8fb4c5f399df81d4182d9eeb9b341bc493c90022b3a8e9