[INFO] fetching crate threadlanes 0.1.0...
[INFO] checking threadlanes-0.1.0 against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] extracting crate threadlanes 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate threadlanes 0.1.0 on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate threadlanes 0.1.0
[INFO] finished tweaking crates.io crate threadlanes 0.1.0
[INFO] tweaked toml for crates.io crate threadlanes 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded countdown_latch v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36dec347ba933c0097651ec8d1f29c0b2147a84ee56361caa8cbe530ef22b712
[INFO] running `Command { std: "docker" "start" "-a" "36dec347ba933c0097651ec8d1f29c0b2147a84ee56361caa8cbe530ef22b712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36dec347ba933c0097651ec8d1f29c0b2147a84ee56361caa8cbe530ef22b712", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36dec347ba933c0097651ec8d1f29c0b2147a84ee56361caa8cbe530ef22b712", kill_on_drop: false }`
[INFO] [stdout] 36dec347ba933c0097651ec8d1f29c0b2147a84ee56361caa8cbe530ef22b712
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7052608a04219e9e930d725a4b3fea0208257ae3a99733ca0f3cb42665d2d721
[INFO] running `Command { std: "docker" "start" "-a" "7052608a04219e9e930d725a4b3fea0208257ae3a99733ca0f3cb42665d2d721", kill_on_drop: false }`
[INFO] [stderr]     Checking countdown_latch v0.1.1
[INFO] [stderr]     Checking threadlanes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0061]: this function takes 2 arguments but 1 argument was supplied
[INFO] [stdout]   --> src/tests.rs:37:21
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let lanes = ThreadLanes::new(executors);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^----------- an argument of type `Option<usize>` is missing
[INFO] [stdout]    |
[INFO] [stdout] note: associated function defined here
[INFO] [stdout]   --> src/lib.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn new<E: LaneExecutor<T> + Send + 'static>(executors: Vec<E>, lane_capacity: Option<usize>) -> Self {
[INFO] [stdout]    |            ^^^                                      -----------------  ----------------------------
[INFO] [stdout] help: provide the argument
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let lanes = ThreadLanes::new(executors, /* Option<usize> */);
[INFO] [stdout]    |                                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `threadlanes` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "7052608a04219e9e930d725a4b3fea0208257ae3a99733ca0f3cb42665d2d721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7052608a04219e9e930d725a4b3fea0208257ae3a99733ca0f3cb42665d2d721", kill_on_drop: false }`
[INFO] [stdout] 7052608a04219e9e930d725a4b3fea0208257ae3a99733ca0f3cb42665d2d721