[INFO] fetching crate tusk 0.0.1...
[INFO] checking tusk-0.0.1 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate tusk 0.0.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate tusk 0.0.1 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tusk 0.0.1
[INFO] finished tweaking crates.io crate tusk 0.0.1
[INFO] tweaked toml for crates.io crate tusk 0.0.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5371b7735608499abfc536a82d66cf85f44e5acb44cb9ea7f3b53babab71946
[INFO] running `Command { std: "docker" "start" "-a" "c5371b7735608499abfc536a82d66cf85f44e5acb44cb9ea7f3b53babab71946", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5371b7735608499abfc536a82d66cf85f44e5acb44cb9ea7f3b53babab71946", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5371b7735608499abfc536a82d66cf85f44e5acb44cb9ea7f3b53babab71946", kill_on_drop: false }`
[INFO] [stdout] c5371b7735608499abfc536a82d66cf85f44e5acb44cb9ea7f3b53babab71946
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09a3d9f75f487de75215d4525a29eb1cb0e2f54ea010bdcc1d737dc567bf6359
[INFO] running `Command { std: "docker" "start" "-a" "09a3d9f75f487de75215d4525a29eb1cb0e2f54ea010bdcc1d737dc567bf6359", kill_on_drop: false }`
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[INFO] [stderr]     Checking tusk v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/tusk/mod.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         /// Load the agent
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 58 |         let reader = File::open(&master_config_file_buf)?;
[INFO] [stdout]    |         -------------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/tusk/mod.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         /// Load the agent
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 58 |         let reader = File::open(&master_config_file_buf)?;
[INFO] [stdout]    |         -------------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/plugins/inputs/mod.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/plugins/outputs/mod.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/plugins/inputs/mod.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/plugins/outputs/mod.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             _ => unimplemented!(),
[INFO] [stdout]    |             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/tusk/mod.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn default() -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] ...
[INFO] [stdout] 44 |             ..Default::default()
[INFO] [stdout]    |               ------------------ recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/tusk/mod.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn default() -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] ...
[INFO] [stdout] 44 |             ..Default::default()
[INFO] [stdout]    |               ------------------ recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/plugins/outputs/stdout.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | /         self.format
[INFO] [stdout] 17 | |             .to_writer(BufWriter::new(io::stdout()), &readings);
[INFO] [stdout]    | |________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/plugins/outputs/stdout.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | /         self.format
[INFO] [stdout] 17 | |             .to_writer(BufWriter::new(io::stdout()), &readings);
[INFO] [stdout]    | |________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.82s
[INFO] running `Command { std: "docker" "inspect" "09a3d9f75f487de75215d4525a29eb1cb0e2f54ea010bdcc1d737dc567bf6359", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09a3d9f75f487de75215d4525a29eb1cb0e2f54ea010bdcc1d737dc567bf6359", kill_on_drop: false }`
[INFO] [stdout] 09a3d9f75f487de75215d4525a29eb1cb0e2f54ea010bdcc1d737dc567bf6359