[INFO] fetching crate linemux 0.2.3...
[INFO] testing linemux-0.2.3 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate linemux 0.2.3 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate linemux 0.2.3 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate linemux 0.2.3
[INFO] finished tweaking crates.io crate linemux 0.2.3
[INFO] tweaked toml for crates.io crate linemux 0.2.3 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate linemux 0.2.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded kqueue-sys v1.0.2
[INFO] [stderr]   Downloaded fsevent-sys v4.0.0
[INFO] [stderr]   Downloaded filetime v0.2.10
[INFO] [stderr]   Downloaded notify v5.0.0-pre.11
[INFO] [stderr]   Downloaded kqueue v1.0.3
[INFO] [stderr]   Downloaded tokio v1.1.1
[INFO] [stderr]   Downloaded inotify v0.9.2
[INFO] [stderr]   Downloaded mio v0.7.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 87998eb806b9355d9a58cafce459322631ee06a25611b519fcd006fec1f1c775
[INFO] running `Command { std: "docker" "start" "-a" "87998eb806b9355d9a58cafce459322631ee06a25611b519fcd006fec1f1c775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87998eb806b9355d9a58cafce459322631ee06a25611b519fcd006fec1f1c775", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87998eb806b9355d9a58cafce459322631ee06a25611b519fcd006fec1f1c775", kill_on_drop: false }`
[INFO] [stdout] 87998eb806b9355d9a58cafce459322631ee06a25611b519fcd006fec1f1c775
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6ab36040b43582e761b7cda186fc0cccbe8ef65a592b22e0ef5b521e738c2ec
[INFO] running `Command { std: "docker" "start" "-a" "c6ab36040b43582e761b7cda186fc0cccbe8ef65a592b22e0ef5b521e738c2ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling syn v1.0.36
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling pin-project-lite v0.2.4
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling pin-project-lite v0.1.7
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling tokio v1.1.1
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling inotify-sys v0.1.3
[INFO] [stderr]    Compiling mio v0.7.8
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling filetime v0.2.10
[INFO] [stderr]    Compiling inotify v0.9.2
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling notify v5.0.0-pre.11
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]    Compiling pin-project v0.4.23
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling linemux v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/reader.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 | / pin_project! {
[INFO] [stdout] 122 | | /// Manages file watches, and can be polled to receive new lines.
[INFO] [stdout] 123 | | ///
[INFO] [stdout] 124 | | /// ## Streaming multiplexed lines
[INFO] [stdout] ...   |
[INFO] [stdout] 143 | | }
[INFO] [stdout] 144 | | }
[INFO] [stdout]     | |_^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/reader.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 | / pin_project! {
[INFO] [stdout] 122 | | /// Manages file watches, and can be polled to receive new lines.
[INFO] [stdout] 123 | | ///
[INFO] [stdout] 124 | | /// ## Streaming multiplexed lines
[INFO] [stdout] ...   |
[INFO] [stdout] 143 | | }
[INFO] [stdout] 144 | | }
[INFO] [stdout]     | |_^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.59s
[INFO] running `Command { std: "docker" "inspect" "c6ab36040b43582e761b7cda186fc0cccbe8ef65a592b22e0ef5b521e738c2ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6ab36040b43582e761b7cda186fc0cccbe8ef65a592b22e0ef5b521e738c2ec", kill_on_drop: false }`
[INFO] [stdout] c6ab36040b43582e761b7cda186fc0cccbe8ef65a592b22e0ef5b521e738c2ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 411c65330027b95af384c158b701e4af4125ffc28382337e6bbba8377655c7a4
[INFO] running `Command { std: "docker" "start" "-a" "411c65330027b95af384c158b701e4af4125ffc28382337e6bbba8377655c7a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/reader.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 | / pin_project! {
[INFO] [stdout] 122 | | /// Manages file watches, and can be polled to receive new lines.
[INFO] [stdout] 123 | | ///
[INFO] [stdout] 124 | | /// ## Streaming multiplexed lines
[INFO] [stdout] ...   |
[INFO] [stdout] 143 | | }
[INFO] [stdout] 144 | | }
[INFO] [stdout]     | |_^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/reader.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 | / pin_project! {
[INFO] [stdout] 122 | | /// Manages file watches, and can be polled to receive new lines.
[INFO] [stdout] 123 | | ///
[INFO] [stdout] 124 | | /// ## Streaming multiplexed lines
[INFO] [stdout] ...   |
[INFO] [stdout] 143 | | }
[INFO] [stdout] 144 | | }
[INFO] [stdout]     | |_^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling linemux v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/reader.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 | / pin_project! {
[INFO] [stdout] 122 | | /// Manages file watches, and can be polled to receive new lines.
[INFO] [stdout] 123 | | ///
[INFO] [stdout] 124 | | /// ## Streaming multiplexed lines
[INFO] [stdout] ...   |
[INFO] [stdout] 143 | | }
[INFO] [stdout] 144 | | }
[INFO] [stdout]     | |_^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/reader.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 | / pin_project! {
[INFO] [stdout] 122 | | /// Manages file watches, and can be polled to receive new lines.
[INFO] [stdout] 123 | | ///
[INFO] [stdout] 124 | | /// ## Streaming multiplexed lines
[INFO] [stdout] ...   |
[INFO] [stdout] 143 | | }
[INFO] [stdout] 144 | | }
[INFO] [stdout]     | |_^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.31s
[INFO] running `Command { std: "docker" "inspect" "411c65330027b95af384c158b701e4af4125ffc28382337e6bbba8377655c7a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "411c65330027b95af384c158b701e4af4125ffc28382337e6bbba8377655c7a4", kill_on_drop: false }`
[INFO] [stdout] 411c65330027b95af384c158b701e4af4125ffc28382337e6bbba8377655c7a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c6e8c030ffd84f66c6fd6b33388bf757a288ecadf3255ab86e74319fc5adc34b
[INFO] running `Command { std: "docker" "start" "-a" "c6e8c030ffd84f66c6fd6b33388bf757a288ecadf3255ab86e74319fc5adc34b", kill_on_drop: false }`
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/reader.rs:121:1
[INFO] [stderr]     |
[INFO] [stderr] 121 | / pin_project! {
[INFO] [stderr] 122 | | /// Manages file watches, and can be polled to receive new lines.
[INFO] [stderr] 123 | | ///
[INFO] [stderr] 124 | | /// ## Streaming multiplexed lines
[INFO] [stderr] ...   |
[INFO] [stderr] 143 | | }
[INFO] [stderr] 144 | | }
[INFO] [stderr]     | |_^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/reader.rs:121:1
[INFO] [stderr]     |
[INFO] [stderr] 121 | / pin_project! {
[INFO] [stderr] 122 | | /// Manages file watches, and can be polled to receive new lines.
[INFO] [stderr] 123 | | ///
[INFO] [stderr] 124 | | /// ## Streaming multiplexed lines
[INFO] [stderr] ...   |
[INFO] [stderr] 143 | | }
[INFO] [stderr] 144 | | }
[INFO] [stderr]     | |_^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `linemux` (lib) generated 2 warnings
[INFO] [stderr] warning: `linemux` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/linemux-c3701119ccef9ce3)
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test events::tests::test_notify_error ... ok
[INFO] [stdout] test events::tests::test_empty_next_event ... ok
[INFO] [stdout] test events::tests::test_add_directory ... ok
[INFO] [stdout] test events::tests::test_add_bad_filename ... ok
[INFO] [stdout] test reader::tests::test_add_bad_filename ... ok
[INFO] [stdout] test reader::tests::test_add_directory ... ok
[INFO] [stdout] test reader::tests::test_is_sync ... ok
[INFO] [stdout] test reader::tests::test_is_send ... ok
[INFO] [stdout] test reader::tests::test_line_fns ... ok
[INFO] [stdout] test reader::tests::test_empty_next_line ... ok
[INFO] [stdout] test reader::tests::test_streamstate_debug ... ok
[INFO] [stdout] test reader::tests::test_inner_fns ... ok
[INFO] [stdout] test reader::tests::test_ops_in_transient_state ... ok
[INFO] [stdout] test reader::tests::test_add_existing_file ... ok
[INFO] [stdout] test reader::tests::test_add_missing_files ... ok
[INFO] [stdout] test reader::tests::test_file_rollover ... ok
[INFO] [stdout] test events::tests::test_add_missing_files ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.11s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests linemux
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 8) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c6e8c030ffd84f66c6fd6b33388bf757a288ecadf3255ab86e74319fc5adc34b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6e8c030ffd84f66c6fd6b33388bf757a288ecadf3255ab86e74319fc5adc34b", kill_on_drop: false }`
[INFO] [stdout] c6e8c030ffd84f66c6fd6b33388bf757a288ecadf3255ab86e74319fc5adc34b