[INFO] cloning repository https://github.com/gregtatum/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/gregtatum/rust-profiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgregtatum%2Frust-profiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgregtatum%2Frust-profiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 36b2c83c1767bc580ab919a266e637da45f4cdd1
[INFO] documenting gregtatum/rust-profiler against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgregtatum%2Frust-profiler" "/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/gregtatum/rust-profiler on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gregtatum/rust-profiler
[INFO] finished tweaking git repo https://github.com/gregtatum/rust-profiler
[INFO] tweaked toml for git repo https://github.com/gregtatum/rust-profiler written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/gregtatum/rust-profiler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ipc-channel v0.12.2
[INFO] [stderr]   Downloaded backtrace v0.3.28
[INFO] [stderr]   Downloaded k9 v0.2.7
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5d4accf19aeb12034887b14df344d6248ac8b2d0671316daedbf8b3c68f93ad
[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" "a5d4accf19aeb12034887b14df344d6248ac8b2d0671316daedbf8b3c68f93ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5d4accf19aeb12034887b14df344d6248ac8b2d0671316daedbf8b3c68f93ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5d4accf19aeb12034887b14df344d6248ac8b2d0671316daedbf8b3c68f93ad", kill_on_drop: false }`
[INFO] [stdout] a5d4accf19aeb12034887b14df344d6248ac8b2d0671316daedbf8b3c68f93ad
[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" "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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--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] 946e8b69974352309820289ad70e33c5d67c9ae4b12ed4bc1f9238e821833633
[INFO] running `Command { std: "docker" "start" "-a" "946e8b69974352309820289ad70e33c5d67c9ae4b12ed4bc1f9238e821833633", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling serde v1.0.91
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling backtrace v0.3.28
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking quote v1.0.2
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking k9 v0.2.7
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking ipc-channel v0.12.2
[INFO] [stderr]  Documenting profiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `mach`
[INFO] [stdout]  --> src/sampler_mac.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use mach;
[INFO] [stdout]   |     ^^^^ no `mach` external crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `profiler`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name profiler src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern backtrace=/opt/rustwide/target/debug/deps/libbacktrace-80cd4101f39db9be.rmeta --extern ipc_channel=/opt/rustwide/target/debug/deps/libipc_channel-c4438ae6a675294c.rmeta --extern k9=/opt/rustwide/target/debug/deps/libk9-fa441dabc8be687b.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-f2d7bce8c9fa4b7a.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-7aaf0b20aaaa9397.rmeta --extern pretty_env_logger=/opt/rustwide/target/debug/deps/libpretty_env_logger-dce5c3ee3bacd38d.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-4180a5e63d9d56a1.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-72a7a89cf6c8f12d.rmeta --extern static_assertions=/opt/rustwide/target/debug/deps/libstatic_assertions-cc8e46707ea09364.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "946e8b69974352309820289ad70e33c5d67c9ae4b12ed4bc1f9238e821833633", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "946e8b69974352309820289ad70e33c5d67c9ae4b12ed4bc1f9238e821833633", kill_on_drop: false }`
[INFO] [stdout] 946e8b69974352309820289ad70e33c5d67c9ae4b12ed4bc1f9238e821833633