[INFO] fetching crate concurrency_toolkit 0.2.8...
[INFO] checking concurrency_toolkit-0.2.8 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-150727
[INFO] extracting crate concurrency_toolkit 0.2.8 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate concurrency_toolkit 0.2.8
[INFO] finished tweaking crates.io crate concurrency_toolkit 0.2.8
[INFO] tweaked toml for crates.io crate concurrency_toolkit 0.2.8 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate concurrency_toolkit 0.2.8 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 48 packages to latest compatible versions
[INFO] [stderr]       Adding loom v0.5.6 (available: v0.7.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded maybe-async v0.2.10
[INFO] [stderr]   Downloaded proc_macro_test v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d6858ab820ba1d72d7ca439b2e64a0f251f9109ea02bc62ba8a4f4595c2bc92
[INFO] running `Command { std: "docker" "start" "-a" "2d6858ab820ba1d72d7ca439b2e64a0f251f9109ea02bc62ba8a4f4595c2bc92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d6858ab820ba1d72d7ca439b2e64a0f251f9109ea02bc62ba8a4f4595c2bc92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d6858ab820ba1d72d7ca439b2e64a0f251f9109ea02bc62ba8a4f4595c2bc92", kill_on_drop: false }`
[INFO] [stdout] 2d6858ab820ba1d72d7ca439b2e64a0f251f9109ea02bc62ba8a4f4595c2bc92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 233dbc1db698d6d0cf3d588633848cef215959c0bf3a0e39cc133a3df7d3c672
[INFO] running `Command { std: "docker" "start" "-a" "233dbc1db698d6d0cf3d588633848cef215959c0bf3a0e39cc133a3df7d3c672", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling maybe-async v0.2.10
[INFO] [stderr]    Compiling proc_macro_test v0.1.5
[INFO] [stderr]     Checking concurrency_toolkit v0.2.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `features`
[INFO] [stdout]  --> src/sync.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[cfg(not(features = "permutation_testing"))]
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] help: there is a config with a similar name and value
[INFO] [stdout]   |
[INFO] [stdout] 1 - #[cfg(not(features = "permutation_testing"))]
[INFO] [stdout] 1 + #[cfg(not(feature = "permutation_testing"))]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `features`
[INFO] [stdout]  --> src/sync.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[cfg(features = "permutation_testing")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] help: there is a config with a similar name and value
[INFO] [stdout]   |
[INFO] [stdout] 5 - #[cfg(features = "permutation_testing")]
[INFO] [stdout] 5 + #[cfg(feature = "permutation_testing")]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `debug`
[INFO] [stdout]   --> src/atomic.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 |     #[cfg(debug)]
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(debug)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(debug)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `debug`
[INFO] [stdout]   --> src/atomic.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 |     #[cfg(not(debug))]
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(debug)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(debug)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `features`
[INFO] [stdout]  --> src/sync.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[cfg(not(features = "permutation_testing"))]
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] help: there is a config with a similar name and value
[INFO] [stdout]   |
[INFO] [stdout] 1 - #[cfg(not(features = "permutation_testing"))]
[INFO] [stdout] 1 + #[cfg(not(feature = "permutation_testing"))]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `features`
[INFO] [stdout]  --> src/sync.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[cfg(features = "permutation_testing")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] help: there is a config with a similar name and value
[INFO] [stdout]   |
[INFO] [stdout] 5 - #[cfg(features = "permutation_testing")]
[INFO] [stdout] 5 + #[cfg(feature = "permutation_testing")]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `debug`
[INFO] [stdout]   --> src/atomic.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 |     #[cfg(debug)]
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(debug)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(debug)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `debug`
[INFO] [stdout]   --> src/atomic.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 |     #[cfg(not(debug))]
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(debug)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(debug)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.44s
[INFO] running `Command { std: "docker" "inspect" "233dbc1db698d6d0cf3d588633848cef215959c0bf3a0e39cc133a3df7d3c672", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "233dbc1db698d6d0cf3d588633848cef215959c0bf3a0e39cc133a3df7d3c672", kill_on_drop: false }`
[INFO] [stdout] 233dbc1db698d6d0cf3d588633848cef215959c0bf3a0e39cc133a3df7d3c672
