[INFO] fetching crate gui 0.6.0...
[INFO] checking gui-0.6.0 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate gui 0.6.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate gui 0.6.0 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "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-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50caf07e3d51c5a75f25af000cd496065bc00124fa3b132d36018370aa160ea1
[INFO] running `Command { std: "docker" "start" "-a" "50caf07e3d51c5a75f25af000cd496065bc00124fa3b132d36018370aa160ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50caf07e3d51c5a75f25af000cd496065bc00124fa3b132d36018370aa160ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50caf07e3d51c5a75f25af000cd496065bc00124fa3b132d36018370aa160ea1", kill_on_drop: false }`
[INFO] [stdout] 50caf07e3d51c5a75f25af000cd496065bc00124fa3b132d36018370aa160ea1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 551907e45fdbc801236420601fcbf7b84c0d5bcbf01cd72b4ce8fd352a65d04b
[INFO] running `Command { std: "docker" "start" "-a" "551907e45fdbc801236420601fcbf7b84c0d5bcbf01cd72b4ce8fd352a65d04b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]    Compiling tokio v0.3.7
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.76
[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: field is never read: `children`
[INFO] [stdout]   --> src/placeholder.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 |   children: Vec<Id>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `children`
[INFO] [stdout]   --> src/placeholder.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 |   children: Vec<Id>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `object`
[INFO] [stdout]    --> tests/test_ui.rs:618:3
[INFO] [stdout]     |
[INFO] [stdout] 618 |   object: Moveable,
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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_panics)]` on by default
[INFO] [stdout]     = note: this usage of assert!() 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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.77s
[INFO] running `Command { std: "docker" "inspect" "551907e45fdbc801236420601fcbf7b84c0d5bcbf01cd72b4ce8fd352a65d04b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "551907e45fdbc801236420601fcbf7b84c0d5bcbf01cd72b4ce8fd352a65d04b", kill_on_drop: false }`
[INFO] [stdout] 551907e45fdbc801236420601fcbf7b84c0d5bcbf01cd72b4ce8fd352a65d04b