[INFO] fetching crate signal-msg 0.2.1...
[INFO] checking signal-msg-0.2.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate signal-msg 0.2.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate signal-msg 0.2.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate signal-msg 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate signal-msg 0.2.1
[INFO] tweaked toml for crates.io crate signal-msg 0.2.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate signal-msg 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded simple-signal v1.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c2d0379c8df5c78b2a026e58a6ec2464607bdfcbb8ef26e62c6d9116a84d5c1
[INFO] running `Command { std: "docker" "start" "-a" "9c2d0379c8df5c78b2a026e58a6ec2464607bdfcbb8ef26e62c6d9116a84d5c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c2d0379c8df5c78b2a026e58a6ec2464607bdfcbb8ef26e62c6d9116a84d5c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c2d0379c8df5c78b2a026e58a6ec2464607bdfcbb8ef26e62c6d9116a84d5c1", kill_on_drop: false }`
[INFO] [stdout] 9c2d0379c8df5c78b2a026e58a6ec2464607bdfcbb8ef26e62c6d9116a84d5c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e0cf149f0027022d845f56d85d64b05b9fd1f78773c1fa7c718afdc2441e76d
[INFO] running `Command { std: "docker" "start" "-a" "2e0cf149f0027022d845f56d85d64b05b9fd1f78773c1fa7c718afdc2441e76d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking simple-signal v1.1.1
[INFO] [stderr]     Checking signal-msg v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `simple_signal` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use simple_signal::{self};
[INFO] [stdout]   |                     ^^^^ the item `simple_signal` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `simple_signal` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use simple_signal::{self};
[INFO] [stdout]   |                     ^^^^ the item `simple_signal` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[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] [stdout] warning: the item `signal_msg` is imported redundantly
[INFO] [stdout]  --> examples/demo.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use signal_msg::{self, SignalReceiver, SignalSender};
[INFO] [stdout]   |                  ^^^^ the item `signal_msg` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "2e0cf149f0027022d845f56d85d64b05b9fd1f78773c1fa7c718afdc2441e76d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e0cf149f0027022d845f56d85d64b05b9fd1f78773c1fa7c718afdc2441e76d", kill_on_drop: false }`
[INFO] [stdout] 2e0cf149f0027022d845f56d85d64b05b9fd1f78773c1fa7c718afdc2441e76d
[INFO] checking signal-msg-0.2.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate signal-msg 0.2.1 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate signal-msg 0.2.1 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate signal-msg 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate signal-msg 0.2.1
[INFO] tweaked toml for crates.io crate signal-msg 0.2.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate signal-msg 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 322b5ba4460939de3803d1377b1fcc47651482638f96c2508fc820b3e6a10fd3
[INFO] running `Command { std: "docker" "start" "-a" "322b5ba4460939de3803d1377b1fcc47651482638f96c2508fc820b3e6a10fd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "322b5ba4460939de3803d1377b1fcc47651482638f96c2508fc820b3e6a10fd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "322b5ba4460939de3803d1377b1fcc47651482638f96c2508fc820b3e6a10fd3", kill_on_drop: false }`
[INFO] [stdout] 322b5ba4460939de3803d1377b1fcc47651482638f96c2508fc820b3e6a10fd3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 075911acc0a43d4403903b4c52dc32e223211ede953cfdc6b8163fde8e0558cd
[INFO] running `Command { std: "docker" "start" "-a" "075911acc0a43d4403903b4c52dc32e223211ede953cfdc6b8163fde8e0558cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking simple-signal v1.1.1
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/simple-signal-1.1.1/src/lib.rs:119:19
[INFO] [stdout]     |
[INFO] [stdout] 119 |     thread::spawn(move || {
[INFO] [stdout]     |                   ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]    --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:672:1
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]     |
[INFO] [stdout] 119 |     thread::spawn(move || -> /* Type */ {
[INFO] [stdout]     |                           +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simple-signal` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "075911acc0a43d4403903b4c52dc32e223211ede953cfdc6b8163fde8e0558cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "075911acc0a43d4403903b4c52dc32e223211ede953cfdc6b8163fde8e0558cd", kill_on_drop: false }`
[INFO] [stdout] 075911acc0a43d4403903b4c52dc32e223211ede953cfdc6b8163fde8e0558cd