[INFO] cloning repository https://github.com/Rah837/async_for_each
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Rah837/async_for_each" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRah837%2Fasync_for_each", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRah837%2Fasync_for_each'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d2e2fddfc04e9ebc99064f7e3ebd5e226c193a1
[INFO] checking Rah837/async_for_each against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRah837%2Fasync_for_each" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Rah837/async_for_each on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Rah837/async_for_each
[INFO] finished tweaking git repo https://github.com/Rah837/async_for_each
[INFO] tweaked toml for git repo https://github.com/Rah837/async_for_each written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Rah837/async_for_each already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c30ad263bdd6dc713f1b605bf9952065f519527f15c4b73154b0983d77d9bad2
[INFO] running `Command { std: "docker" "start" "-a" "c30ad263bdd6dc713f1b605bf9952065f519527f15c4b73154b0983d77d9bad2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c30ad263bdd6dc713f1b605bf9952065f519527f15c4b73154b0983d77d9bad2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c30ad263bdd6dc713f1b605bf9952065f519527f15c4b73154b0983d77d9bad2", kill_on_drop: false }`
[INFO] [stdout] c30ad263bdd6dc713f1b605bf9952065f519527f15c4b73154b0983d77d9bad2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f96e52258fb387ff12188297da1a49af338cf5de0abcb78efdb27bc5d26412b
[INFO] running `Command { std: "docker" "start" "-a" "3f96e52258fb387ff12188297da1a49af338cf5de0abcb78efdb27bc5d26412b", kill_on_drop: false }`
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking async v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/async.rs:39:19
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn call(self, F, bool)
[INFO] [stdout]    |                   ^ help: try naming the parameter or explicitly ignoring it: `_: F`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/async.rs:39:22
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn call(self, F, bool)
[INFO] [stdout]    |                      ^^^^ help: try naming the parameter or explicitly ignoring it: `_: bool`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/async.rs:39:19
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn call(self, F, bool)
[INFO] [stdout]    |                   ^ help: try naming the parameter or explicitly ignoring it: `_: F`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/async.rs:39:22
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn call(self, F, bool)
[INFO] [stdout]    |                      ^^^^ help: try naming the parameter or explicitly ignoring it: `_: bool`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/async.rs:60:41
[INFO] [stdout]    |
[INFO] [stdout] 60 |                         if *pause { let _ = cvar.wait(pause).unwrap(); }
[INFO] [stdout]    |                                         ^   ^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |                                         |
[INFO] [stdout]    |                                         this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 60 |                         if *pause { let _unused = cvar.wait(pause).unwrap(); }
[INFO] [stdout]    |                                         ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 60 |                         if *pause { drop(cvar.wait(pause).unwrap()); }
[INFO] [stdout]    |                                     ~~~~~                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-binding let on a synchronization lock
[INFO] [stdout]   --> src/async.rs:60:41
[INFO] [stdout]    |
[INFO] [stdout] 60 |                         if *pause { let _ = cvar.wait(pause).unwrap(); }
[INFO] [stdout]    |                                         ^   ^^^^^^^^^^^^^^^^^^^^^^^^^ this binding will immediately drop the value assigned to it
[INFO] [stdout]    |                                         |
[INFO] [stdout]    |                                         this lock is not assigned to a binding and is immediately dropped
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(let_underscore_lock)]` on by default
[INFO] [stdout] help: consider binding to an unused variable to avoid immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 60 |                         if *pause { let _unused = cvar.wait(pause).unwrap(); }
[INFO] [stdout]    |                                         ~~~~~~~
[INFO] [stdout] help: consider immediately dropping the value
[INFO] [stdout]    |
[INFO] [stdout] 60 |                         if *pause { drop(cvar.wait(pause).unwrap()); }
[INFO] [stdout]    |                                     ~~~~~                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async` (bin "async" test) due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `async` (bin "async") due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3f96e52258fb387ff12188297da1a49af338cf5de0abcb78efdb27bc5d26412b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f96e52258fb387ff12188297da1a49af338cf5de0abcb78efdb27bc5d26412b", kill_on_drop: false }`
[INFO] [stdout] 3f96e52258fb387ff12188297da1a49af338cf5de0abcb78efdb27bc5d26412b
