[INFO] fetching crate linemux 0.2.3...
[INFO] checking linemux-0.2.3 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate linemux 0.2.3 into /workspace/builds/worker-44/source
[INFO] validating manifest of crates.io crate linemux 0.2.3 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-44/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded miow v0.3.6
[INFO] [stderr]   Downloaded notify v5.0.0-pre.11
[INFO] [stderr]   Downloaded once_cell v1.4.0
[INFO] [stderr]   Downloaded pin-project-internal v0.4.23
[INFO] [stderr]   Downloaded pin-project v0.4.23
[INFO] [stderr]   Downloaded futures-core v0.3.5
[INFO] [stderr]   Downloaded fsevent-sys v4.0.0
[INFO] [stderr]   Downloaded inotify-sys v0.1.3
[INFO] [stderr]   Downloaded pin-project-lite v0.1.7
[INFO] [stderr]   Downloaded pin-project-lite v0.2.4
[INFO] [stderr]   Downloaded tokio-macros v1.0.0
[INFO] [stderr]   Downloaded futures-task v0.3.5
[INFO] [stderr]   Downloaded futures-util v0.3.5
[INFO] [stderr]   Downloaded inotify v0.9.2
[INFO] [stderr]   Downloaded libc v0.2.86
[INFO] [stderr]   Downloaded mio v0.7.8
[INFO] [stderr]   Downloaded filetime v0.2.10
[INFO] [stderr]   Downloaded tokio v1.1.1
[INFO] [stderr]   Downloaded kqueue v1.0.3
[INFO] [stderr]   Downloaded syn v1.0.36
[INFO] [stderr]   Downloaded kqueue-sys v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1745cc806cf84430a4999e14e8a6c8724623fdd8991234077b825bd40504e18c
[INFO] running `Command { std: "docker" "start" "-a" "1745cc806cf84430a4999e14e8a6c8724623fdd8991234077b825bd40504e18c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1745cc806cf84430a4999e14e8a6c8724623fdd8991234077b825bd40504e18c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1745cc806cf84430a4999e14e8a6c8724623fdd8991234077b825bd40504e18c", kill_on_drop: false }`
[INFO] [stdout] 1745cc806cf84430a4999e14e8a6c8724623fdd8991234077b825bd40504e18c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d7d266da919bd67c33bf04258831c924f97eb0c39fab46fcffab71aa4aa4b3f
[INFO] running `Command { std: "docker" "start" "-a" "5d7d266da919bd67c33bf04258831c924f97eb0c39fab46fcffab71aa4aa4b3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling syn v1.0.36
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking pin-project-lite v0.1.7
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling tokio v1.1.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.10
[INFO] [stderr]     Checking mio v0.7.8
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking inotify v0.9.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking notify v5.0.0-pre.11
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking 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 `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/reader.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 | / pin_project! {
[INFO] [stdout] 122 | | /// Manages file watches, and can be polled to receive new lines.
[INFO] [stdout] 123 | | ///
[INFO] [stdout] 124 | | /// ## Streaming multiplexed lines
[INFO] [stdout] ...   |
[INFO] [stdout] 143 | | }
[INFO] [stdout] 144 | | }
[INFO] [stdout]     | |_^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.57s
[INFO] running `Command { std: "docker" "inspect" "5d7d266da919bd67c33bf04258831c924f97eb0c39fab46fcffab71aa4aa4b3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d7d266da919bd67c33bf04258831c924f97eb0c39fab46fcffab71aa4aa4b3f", kill_on_drop: false }`
[INFO] [stdout] 5d7d266da919bd67c33bf04258831c924f97eb0c39fab46fcffab71aa4aa4b3f