[INFO] fetching crate sema 0.1.4...
[INFO] checking sema-0.1.4 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate sema 0.1.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate sema 0.1.4 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sema 0.1.4
[INFO] finished tweaking crates.io crate sema 0.1.4
[INFO] tweaked toml for crates.io crate sema 0.1.4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70a02d3a305bd3fea4a48be3170a7140713eb13b75cf718ffd6d712981619953
[INFO] running `Command { std: "docker" "start" "-a" "70a02d3a305bd3fea4a48be3170a7140713eb13b75cf718ffd6d712981619953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70a02d3a305bd3fea4a48be3170a7140713eb13b75cf718ffd6d712981619953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70a02d3a305bd3fea4a48be3170a7140713eb13b75cf718ffd6d712981619953", kill_on_drop: false }`
[INFO] [stdout] 70a02d3a305bd3fea4a48be3170a7140713eb13b75cf718ffd6d712981619953
[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" "RUSTFLAGS=--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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a913fc14d387c2259159d87974784e7c5c1b7483de0b5bac742c75808710adc
[INFO] running `Command { std: "docker" "start" "-a" "3a913fc14d387c2259159d87974784e7c5c1b7483de0b5bac742c75808710adc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking nix v0.21.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking sema v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/sys.rs:50:31
[INFO] [stdout]    |
[INFO] [stdout] 50 |     const ONE_WAITER: usize = (1 << NWAITERS_SHIFT);
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/sys.rs:52:35
[INFO] [stdout]    |
[INFO] [stdout] 52 |     const NEG_ONE_WAITER: usize = (!0 << NWAITERS_SHIFT);
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/sys.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |             try!(self.wait());
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/sys.rs:188:38
[INFO] [stdout]     |
[INFO] [stdout] 188 |                 let prev = self.data.compare_and_swap(d, d - 1, Ordering::Acquire);
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/sys.rs:226:42
[INFO] [stdout]     |
[INFO] [stdout] 226 |                     let prev = self.data.compare_and_swap(d, (d - 1) - ONE_WAITER, Ordering::Acquire);
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/sys.rs:50:31
[INFO] [stdout]    |
[INFO] [stdout] 50 |     const ONE_WAITER: usize = (1 << NWAITERS_SHIFT);
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/sys.rs:52:35
[INFO] [stdout]    |
[INFO] [stdout] 52 |     const NEG_ONE_WAITER: usize = (!0 << NWAITERS_SHIFT);
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/sys.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |             try!(self.wait());
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/sys.rs:188:38
[INFO] [stdout]     |
[INFO] [stdout] 188 |                 let prev = self.data.compare_and_swap(d, d - 1, Ordering::Acquire);
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/sys.rs:226:42
[INFO] [stdout]     |
[INFO] [stdout] 226 |                     let prev = self.data.compare_and_swap(d, (d - 1) - ONE_WAITER, Ordering::Acquire);
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.33s
[INFO] running `Command { std: "docker" "inspect" "3a913fc14d387c2259159d87974784e7c5c1b7483de0b5bac742c75808710adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a913fc14d387c2259159d87974784e7c5c1b7483de0b5bac742c75808710adc", kill_on_drop: false }`
[INFO] [stdout] 3a913fc14d387c2259159d87974784e7c5c1b7483de0b5bac742c75808710adc