[INFO] fetching crate tuifw-window 0.8.1...
[INFO] testing tuifw-window-0.8.1 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate tuifw-window 0.8.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate tuifw-window 0.8.1 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tuifw-window 0.8.1
[INFO] finished tweaking crates.io crate tuifw-window 0.8.1
[INFO] tweaked toml for crates.io crate tuifw-window 0.8.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate tuifw-window 0.8.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-integer v0.1.43
[INFO] [stderr]   Downloaded tuifw-screen v0.8.1
[INFO] [stderr]   Downloaded tuifw-screen-base v0.8.1
[INFO] [stderr]   Downloaded once_cell v1.4.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.23
[INFO] [stderr]   Downloaded generics v0.2.5
[INFO] [stderr]   Downloaded phantom-type v0.3.0
[INFO] [stderr]   Downloaded components-arena v1.1.1
[INFO] [stderr]   Downloaded libc v0.2.77
[INFO] [stderr]   Downloaded tuifw-screen-ncurses v0.8.1
[INFO] [stderr]   Downloaded num-bigint v0.3.0
[INFO] [stderr]   Downloaded enum-ordinalize v3.1.8
[INFO] [stderr]   Downloaded unicode-normalization v0.1.13
[INFO] [stderr]   Downloaded tuifw-screen-test v0.8.1
[INFO] [stderr]   Downloaded syn v1.0.42
[INFO] [stderr]   Downloaded educe v0.4.13
[INFO] [stderr]   Downloaded tinyvec v0.3.4
[INFO] [stderr]   Downloaded cc v1.0.60
[INFO] [stderr]   Downloaded tuifw-screen-winapi v0.8.1
[INFO] [stderr]   Downloaded macro-attr-2018 v1.1.0
[INFO] [stderr]   Downloaded enum-derive-2018 v1.0.1
[INFO] [stderr]   Downloaded pkg-config v0.3.18
[INFO] [stderr]   Downloaded paste v1.0.1
[INFO] [stderr]   Downloaded dyn-context v0.3.2
[INFO] [stderr]   Downloaded num-traits v0.2.12
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32c03e5b748626c3104be8a0c4454f07042ddeca9dcc7513ee6e801a228cde15
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "32c03e5b748626c3104be8a0c4454f07042ddeca9dcc7513ee6e801a228cde15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32c03e5b748626c3104be8a0c4454f07042ddeca9dcc7513ee6e801a228cde15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32c03e5b748626c3104be8a0c4454f07042ddeca9dcc7513ee6e801a228cde15", kill_on_drop: false }`
[INFO] [stdout] 32c03e5b748626c3104be8a0c4454f07042ddeca9dcc7513ee6e801a228cde15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8baf389fcdab6e8deb49b0569080e6e55a33bd1ce869e698e522b38a89f2f0e5
[INFO] running `Command { std: "docker" "start" "-a" "8baf389fcdab6e8deb49b0569080e6e55a33bd1ce869e698e522b38a89f2f0e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling generics v0.2.5
[INFO] [stderr]    Compiling macro-attr-2018 v1.1.0
[INFO] [stderr]    Compiling once_cell v1.4.1
[INFO] [stderr]    Compiling enum-derive-2018 v1.0.1
[INFO] [stderr]    Compiling paste v1.0.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.23
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling dyn-context v0.3.2
[INFO] [stderr]    Compiling tuifw-screen-base v0.8.1
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tuifw-screen-base-0.8.1/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tuifw-screen-base`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8baf389fcdab6e8deb49b0569080e6e55a33bd1ce869e698e522b38a89f2f0e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8baf389fcdab6e8deb49b0569080e6e55a33bd1ce869e698e522b38a89f2f0e5", kill_on_drop: false }`
[INFO] [stdout] 8baf389fcdab6e8deb49b0569080e6e55a33bd1ce869e698e522b38a89f2f0e5