[INFO] cloning repository https://github.com/y2kappa/Rust-Profiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/y2kappa/Rust-Profiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fy2kappa%2FRust-Profiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fy2kappa%2FRust-Profiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb8ba16affd8e2fbdffc9efeabbf19cee9573d80
[INFO] documenting y2kappa/Rust-Profiler against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fy2kappa%2FRust-Profiler" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/y2kappa/Rust-Profiler on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/y2kappa/Rust-Profiler
[INFO] finished tweaking git repo https://github.com/y2kappa/Rust-Profiler
[INFO] tweaked toml for git repo https://github.com/y2kappa/Rust-Profiler written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/y2kappa/Rust-Profiler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded doc-comment v0.3.1
[INFO] [stderr]   Downloaded rayon-core v1.6.0
[INFO] [stderr]   Downloaded sysinfo v0.9.5
[INFO] [stderr]   Downloaded rayon v1.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", 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] 76569d57ddf00a809846001851182449d9b213a29552f3e76086616764091bcd
[INFO] running `Command { std: "docker" "start" "-a" "76569d57ddf00a809846001851182449d9b213a29552f3e76086616764091bcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76569d57ddf00a809846001851182449d9b213a29552f3e76086616764091bcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76569d57ddf00a809846001851182449d9b213a29552f3e76086616764091bcd", kill_on_drop: false }`
[INFO] [stdout] 76569d57ddf00a809846001851182449d9b213a29552f3e76086616764091bcd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 83cd1fd19c8dea3cb38ba06e20685112e90e3e6b2a3137a4ed352e67ca614441
[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" "83cd1fd19c8dea3cb38ba06e20685112e90e3e6b2a3137a4ed352e67ca614441", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling sysinfo v0.9.5
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling profiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> build.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]  Documenting profiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 17.13s
[INFO] running `Command { std: "docker" "inspect" "83cd1fd19c8dea3cb38ba06e20685112e90e3e6b2a3137a4ed352e67ca614441", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83cd1fd19c8dea3cb38ba06e20685112e90e3e6b2a3137a4ed352e67ca614441", kill_on_drop: false }`
[INFO] [stdout] 83cd1fd19c8dea3cb38ba06e20685112e90e3e6b2a3137a4ed352e67ca614441