[INFO] cloning repository https://github.com/Wataru-Nakata/comprehensive-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Wataru-Nakata/comprehensive-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWataru-Nakata%2Fcomprehensive-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWataru-Nakata%2Fcomprehensive-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f97b45ffe0184d8fbf9e728bb85a1c4c780d6801
[INFO] checking Wataru-Nakata/comprehensive-rust against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWataru-Nakata%2Fcomprehensive-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Wataru-Nakata/comprehensive-rust
[INFO] finished tweaking git repo https://github.com/Wataru-Nakata/comprehensive-rust
[INFO] tweaked toml for git repo https://github.com/Wataru-Nakata/comprehensive-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Wataru-Nakata/comprehensive-rust on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Wataru-Nakata/comprehensive-rust 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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f34df6b095dbad2d67b4bb1f1d5e5ffe7a40b2adbb8158a8f8bbe0e69c6bdd4
[INFO] running `Command { std: "docker" "start" "-a" "0f34df6b095dbad2d67b4bb1f1d5e5ffe7a40b2adbb8158a8f8bbe0e69c6bdd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f34df6b095dbad2d67b4bb1f1d5e5ffe7a40b2adbb8158a8f8bbe0e69c6bdd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f34df6b095dbad2d67b4bb1f1d5e5ffe7a40b2adbb8158a8f8bbe0e69c6bdd4", kill_on_drop: false }`
[INFO] [stdout] 0f34df6b095dbad2d67b4bb1f1d5e5ffe7a40b2adbb8158a8f8bbe0e69c6bdd4
[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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1442053f006a4b217ad95d2674ade677f0bc2fd9c4c42e419b42a1e6ddcb35b
[INFO] running `Command { std: "docker" "start" "-a" "c1442053f006a4b217ad95d2674ade677f0bc2fd9c4c42e419b42a1e6ddcb35b", kill_on_drop: false }`
[INFO] [stderr]     Checking comprehensive-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/philosophers.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |             for i in 1..10000 {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Fork` is never constructed
[INFO] [stdout]  --> src/bin/philosophers.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Fork;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::sync::MutexGuard` that must be used
[INFO] [stdout]   --> src/bin/philosophers.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         self.right_fork.lock().unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if unused the Mutex will immediately unlock
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let _ = self.right_fork.lock().unwrap();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::sync::MutexGuard` that must be used
[INFO] [stdout]   --> src/bin/philosophers.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         self.left_fork.lock().unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if unused the Mutex will immediately unlock
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let _ = self.left_fork.lock().unwrap();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/philosophers.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |             for i in 1..10000 {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Fork` is never constructed
[INFO] [stdout]  --> src/bin/philosophers.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Fork;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::sync::MutexGuard` that must be used
[INFO] [stdout]   --> src/bin/philosophers.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |         self.right_fork.lock().unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if unused the Mutex will immediately unlock
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let _ = self.right_fork.lock().unwrap();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::sync::MutexGuard` that must be used
[INFO] [stdout]   --> src/bin/philosophers.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         self.left_fork.lock().unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if unused the Mutex will immediately unlock
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let _ = self.left_fork.lock().unwrap();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Label` is never constructed
[INFO] [stdout]   --> src/bin/simple-gui.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct Label {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Button` is never constructed
[INFO] [stdout]   --> src/bin/simple-gui.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Button {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Window` is never constructed
[INFO] [stdout]   --> src/bin/simple-gui.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Window {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `comprehensive-rust` (bin "simple-gui" test) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c1442053f006a4b217ad95d2674ade677f0bc2fd9c4c42e419b42a1e6ddcb35b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1442053f006a4b217ad95d2674ade677f0bc2fd9c4c42e419b42a1e6ddcb35b", kill_on_drop: false }`
[INFO] [stdout] c1442053f006a4b217ad95d2674ade677f0bc2fd9c4c42e419b42a1e6ddcb35b