[INFO] fetching crate gui 0.6.0...
[INFO] checking gui-0.6.0 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate gui 0.6.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate gui 0.6.0 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gui 0.6.0
[INFO] finished tweaking crates.io crate gui 0.6.0
[INFO] tweaked toml for crates.io crate gui 0.6.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89a7958a4be824da6ca421f45a350cf19fd5fee1c86ab3d0a1b28a01251537e3
[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" "89a7958a4be824da6ca421f45a350cf19fd5fee1c86ab3d0a1b28a01251537e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89a7958a4be824da6ca421f45a350cf19fd5fee1c86ab3d0a1b28a01251537e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89a7958a4be824da6ca421f45a350cf19fd5fee1c86ab3d0a1b28a01251537e3", kill_on_drop: false }`
[INFO] [stdout] 89a7958a4be824da6ca421f45a350cf19fd5fee1c86ab3d0a1b28a01251537e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--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] 275d377700bfdf214c3ff6e45958c7ce5bb7ba2ee36c6d8f163b1c605f00eb22
[INFO] running `Command { std: "docker" "start" "-a" "275d377700bfdf214c3ff6e45958c7ce5bb7ba2ee36c6d8f163b1c605f00eb22", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling tokio v0.3.7
[INFO] [stderr]    Compiling gui-derive v0.6.0
[INFO] [stderr]    Compiling tokio-macros v0.3.2
[INFO] [stderr]     Checking gui v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/test_ui.rs:107:42
[INFO] [stdout]     |
[INFO] [stdout] 107 |     assert!(string.starts_with("Ui { "), string);
[INFO] [stdout]     |                                          ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 107 |     assert!(string.starts_with("Ui { "), "{}", string);
[INFO] [stdout]     |                                          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.19s
[INFO] running `Command { std: "docker" "inspect" "275d377700bfdf214c3ff6e45958c7ce5bb7ba2ee36c6d8f163b1c605f00eb22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "275d377700bfdf214c3ff6e45958c7ce5bb7ba2ee36c6d8f163b1c605f00eb22", kill_on_drop: false }`
[INFO] [stdout] 275d377700bfdf214c3ff6e45958c7ce5bb7ba2ee36c6d8f163b1c605f00eb22