[INFO] fetching crate tuifw-window 0.26.0...
[INFO] testing tuifw-window-0.26.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate tuifw-window 0.26.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate tuifw-window 0.26.0
[INFO] finished tweaking crates.io crate tuifw-window 0.26.0
[INFO] tweaked toml for crates.io crate tuifw-window 0.26.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tuifw-window 0.26.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 71 packages to latest compatible versions
[INFO] [stderr]       Adding downcast-rs v1.2.1 (available: v2.0.2)
[INFO] [stderr]       Adding dynamic-cast v0.1.7 (available: v0.2.0)
[INFO] [stderr]       Adding panicking v0.5.0 (available: v0.7.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 657b634b0c4320a767a1d945f305452e3a1e2168a7a633d7fe06c6945f39a694
[INFO] running `Command { std: "docker" "start" "-a" "657b634b0c4320a767a1d945f305452e3a1e2168a7a633d7fe06c6945f39a694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "657b634b0c4320a767a1d945f305452e3a1e2168a7a633d7fe06c6945f39a694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "657b634b0c4320a767a1d945f305452e3a1e2168a7a633d7fe06c6945f39a694", kill_on_drop: false }`
[INFO] [stdout] 657b634b0c4320a767a1d945f305452e3a1e2168a7a633d7fe06c6945f39a694
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd34178f6e0d61d3d4df00e9d1afd288a46209c4b6d788dd88299e38986505cd
[INFO] running `Command { std: "docker" "start" "-a" "bd34178f6e0d61d3d4df00e9d1afd288a46209c4b6d788dd88299e38986505cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling litrs v1.0.0
[INFO] [stderr]    Compiling libc v0.2.185
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling panicking v0.7.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling const-default v1.0.0
[INFO] [stderr]    Compiling macro-attr-2018 v3.0.1
[INFO] [stderr]    Compiling arraybox v0.1.4
[INFO] [stderr]    Compiling components-arena-traits v1.2.0
[INFO] [stderr]    Compiling unicode-width v0.2.2
[INFO] [stderr]    Compiling generics v0.5.3
[INFO] [stderr]    Compiling errno-sys v0.2.0
[INFO] [stderr]    Compiling downcast-rs v1.2.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling dyn-clone v1.0.20
[INFO] [stderr]    Compiling dynamic-cast v0.1.7
[INFO] [stderr]    Compiling rand v0.8.6
[INFO] [stderr]    Compiling document-features v0.2.12
[INFO] [stderr]    Compiling enum-derive-2018 v3.0.2
[INFO] [stderr]    Compiling iter-identify_first_last v0.2.3
[INFO] [stderr]    Compiling int-vec-2d v0.1.5
[INFO] [stderr]    Compiling tuifw-screen-base v0.26.0
[INFO] [stderr]    Compiling sync-no-std v0.1.5
[INFO] [stderr]    Compiling timer-no-std v0.6.0
[INFO] [stderr]    Compiling errno-no-std v0.2.2
[INFO] [stderr]    Compiling print-no-std v0.3.0
[INFO] [stderr]    Compiling enum-ordinalize-derive v4.3.2
[INFO] [stderr]    Compiling const-default-derive v0.2.0
[INFO] [stderr]    Compiling composable-allocators v0.3.5
[INFO] [stderr]    Compiling enum-ordinalize v4.3.2
[INFO] [stderr]    Compiling educe v0.6.0
[INFO] [stderr]    Compiling phantom-type v0.5.2
[INFO] [stderr]    Compiling components-arena v4.2.3
[INFO] [stderr]    Compiling tuifw-window v0.26.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: feature `never_type` is declared but not used
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(never_type)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![deny(warnings)]
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   = note: `#[deny(unused_features)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tuifw-window` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "bd34178f6e0d61d3d4df00e9d1afd288a46209c4b6d788dd88299e38986505cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd34178f6e0d61d3d4df00e9d1afd288a46209c4b6d788dd88299e38986505cd", kill_on_drop: false }`
[INFO] [stdout] bd34178f6e0d61d3d4df00e9d1afd288a46209c4b6d788dd88299e38986505cd