[INFO] fetching crate tokio-sync 0.1.4... [INFO] extracting crate tokio-sync 0.1.4 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/tokio-sync/0.1.4 [INFO] extracting crate tokio-sync 0.1.4 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/tokio-sync/0.1.4 [INFO] validating manifest of tokio-sync-0.1.4 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of tokio-sync-0.1.4 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing tokio-sync-0.1.4 [INFO] finished frobbing tokio-sync-0.1.4 [INFO] frobbed toml for tokio-sync-0.1.4 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/tokio-sync/0.1.4/Cargo.toml [INFO] started frobbing tokio-sync-0.1.4 [INFO] finished frobbing tokio-sync-0.1.4 [INFO] frobbed toml for tokio-sync-0.1.4 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/tokio-sync/0.1.4/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded loom v0.1.1 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] testing tokio-sync-0.1.4 against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/tokio-sync/0.1.4:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"` [INFO] [stdout] 507fc1148319bfefb239e1ae85e0535e991a4774669ed2bedc05c42e18ad8f6d [INFO] running `"docker" "start" "-a" "507fc1148319bfefb239e1ae85e0535e991a4774669ed2bedc05c42e18ad8f6d"` [INFO] [stderr] Compiling tokio-sync v0.1.4 (/opt/crater/workdir) [INFO] [stderr] warning: the item `Relaxed` is imported redundantly [INFO] [stderr] --> src/mpsc/list.rs:218:13 [INFO] [stderr] | [INFO] [stderr] 12 | use std::sync::atomic::Ordering::{AcqRel, Acquire, Relaxed, Release}; [INFO] [stderr] | ------- the item `Relaxed` is already imported here [INFO] [stderr] ... [INFO] [stderr] 218 | use std::sync::atomic::Ordering::Relaxed; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: the item `Relaxed` is imported redundantly [INFO] [stderr] --> src/semaphore.rs:535:13 [INFO] [stderr] | [INFO] [stderr] 24 | use std::sync::atomic::Ordering::{self, AcqRel, Acquire, Relaxed, Release}; [INFO] [stderr] | ------- the item `Relaxed` is already imported here [INFO] [stderr] ... [INFO] [stderr] 535 | use std::sync::atomic::Ordering::Relaxed; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.33s [INFO] running `"docker" "inspect" "507fc1148319bfefb239e1ae85e0535e991a4774669ed2bedc05c42e18ad8f6d"` [INFO] running `"docker" "rm" "-f" "507fc1148319bfefb239e1ae85e0535e991a4774669ed2bedc05c42e18ad8f6d"` [INFO] [stdout] 507fc1148319bfefb239e1ae85e0535e991a4774669ed2bedc05c42e18ad8f6d [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/tokio-sync/0.1.4:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"` [INFO] [stdout] 49a71d78191c4ea1678d44b5e0bda17afe937cdd029281eedc2671f51182cf8a [INFO] running `"docker" "start" "-a" "49a71d78191c4ea1678d44b5e0bda17afe937cdd029281eedc2671f51182cf8a"` [INFO] [stderr] Compiling tokio-mock-task v0.1.1 [INFO] [stderr] Compiling loom v0.1.1 [INFO] [stderr] Compiling env_logger v0.5.13 [INFO] [stderr] warning[E0381]: use of possibly uninitialized variable: `_` [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/loom-0.1.1/src/rt/scheduler/std.rs:238:13 [INFO] [stderr] | [INFO] [stderr] 238 | / loop { [INFO] [stderr] 239 | | match *th { [INFO] [stderr] 240 | | Idle => { [INFO] [stderr] 241 | | th = shared.condvars[i].wait(th).unwrap(); [INFO] [stderr] ... | [INFO] [stderr] 251 | | } [INFO] [stderr] 252 | | } [INFO] [stderr] | |_____________^ use of possibly uninitialized value [INFO] [stderr] | [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] Compiling tokio-sync v0.1.4 (/opt/crater/workdir) [INFO] [stderr] error: the item `Relaxed` is imported redundantly [INFO] [stderr] --> src/mpsc/list.rs:218:13 [INFO] [stderr] | [INFO] [stderr] 12 | use std::sync::atomic::Ordering::{AcqRel, Acquire, Relaxed, Release}; [INFO] [stderr] | ------- the item `Relaxed` is already imported here [INFO] [stderr] ... [INFO] [stderr] 218 | use std::sync::atomic::Ordering::Relaxed; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: lint level defined here [INFO] [stderr] --> src/lib.rs:3:24 [INFO] [stderr] | [INFO] [stderr] 3 | #![cfg_attr(test, deny(warnings))] [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] = note: #[deny(unused_imports)] implied by #[deny(warnings)] [INFO] [stderr] [INFO] [stderr] error: the item `Relaxed` is imported redundantly [INFO] [stderr] --> src/semaphore.rs:535:13 [INFO] [stderr] | [INFO] [stderr] 24 | use std::sync::atomic::Ordering::{self, AcqRel, Acquire, Relaxed, Release}; [INFO] [stderr] | ------- the item `Relaxed` is already imported here [INFO] [stderr] ... [INFO] [stderr] 535 | use std::sync::atomic::Ordering::Relaxed; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to 2 previous errors [INFO] [stderr] [INFO] [stderr] error: Could not compile `tokio-sync`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "49a71d78191c4ea1678d44b5e0bda17afe937cdd029281eedc2671f51182cf8a"` [INFO] running `"docker" "rm" "-f" "49a71d78191c4ea1678d44b5e0bda17afe937cdd029281eedc2671f51182cf8a"` [INFO] [stdout] 49a71d78191c4ea1678d44b5e0bda17afe937cdd029281eedc2671f51182cf8a