[INFO] fetching crate linemux 0.2.3...
[INFO] checking linemux-0.2.3 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate linemux 0.2.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate linemux 0.2.3 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "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-7/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" "+0599f3403366d9c57f0625e6de3af214b5042a90" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 306e8c21774050bcde8b77d94d2b37908cf42e41ef16d88e39fb239fbf4136eb
[INFO] running `Command { std: "docker" "start" "-a" "306e8c21774050bcde8b77d94d2b37908cf42e41ef16d88e39fb239fbf4136eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "306e8c21774050bcde8b77d94d2b37908cf42e41ef16d88e39fb239fbf4136eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "306e8c21774050bcde8b77d94d2b37908cf42e41ef16d88e39fb239fbf4136eb", kill_on_drop: false }`
[INFO] [stdout] 306e8c21774050bcde8b77d94d2b37908cf42e41ef16d88e39fb239fbf4136eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1500374d8f14917f82b19f16cfae5738a38b8f34361ab973b03fefc8ee3a4598
[INFO] running `Command { std: "docker" "start" "-a" "1500374d8f14917f82b19f16cfae5738a38b8f34361ab973b03fefc8ee3a4598", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[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 bitflags v1.2.1
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking pin-project-lite v0.1.7
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking walkdir v2.3.1
[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 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 crossbeam-channel v0.5.0
[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 `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/reader.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 | / pin_project! {
[INFO] [stdout] 122 | | /// Manages file watches, and can be polled to receive new lines.
[INFO] [stdout] 123 | | ///
[INFO] [stdout] 124 | | /// ## Streaming multiplexed lines
[INFO] [stdout] ...   |
[INFO] [stdout] 143 | | }
[INFO] [stdout] 144 | | }
[INFO] [stdout]     | |_^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `$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] [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 12.39s
[INFO] running `Command { std: "docker" "inspect" "1500374d8f14917f82b19f16cfae5738a38b8f34361ab973b03fefc8ee3a4598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1500374d8f14917f82b19f16cfae5738a38b8f34361ab973b03fefc8ee3a4598", kill_on_drop: false }`
[INFO] [stdout] 1500374d8f14917f82b19f16cfae5738a38b8f34361ab973b03fefc8ee3a4598