[INFO] cloning repository https://github.com/coreyja/must_not_use
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/coreyja/must_not_use" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoreyja%2Fmust_not_use", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoreyja%2Fmust_not_use'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 035ed33b36b889b71ec9863f487e0c8a0c70e799
[INFO] checking coreyja/must_not_use against try#b152f5575a2ac7126ae0019e4e679abe9399213e for pr-157841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoreyja%2Fmust_not_use" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/coreyja/must_not_use
[INFO] finished tweaking git repo https://github.com/coreyja/must_not_use
[INFO] tweaked toml for git repo https://github.com/coreyja/must_not_use written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/coreyja/must_not_use on toolchain b152f5575a2ac7126ae0019e4e679abe9399213e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/coreyja/must_not_use 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" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking coreyja/must_not_use against try#b152f5575a2ac7126ae0019e4e679abe9399213e for pr-157841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoreyja%2Fmust_not_use" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/coreyja/must_not_use
[INFO] finished tweaking git repo https://github.com/coreyja/must_not_use
[INFO] tweaked toml for git repo https://github.com/coreyja/must_not_use written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/coreyja/must_not_use on toolchain b152f5575a2ac7126ae0019e4e679abe9399213e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/coreyja/must_not_use 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" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.92
[INFO] [stderr]   Downloaded quote v1.0.37
[INFO] [stderr]   Downloaded unicode-ident v1.0.14
[INFO] [stderr]   Downloaded syn v2.0.90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4e8357dd06dd6291457255acf6e57dbee6c5bc30be7a88e211789f3ac8dce4b7
[INFO] running `Command { std: "docker" "start" "4e8357dd06dd6291457255acf6e57dbee6c5bc30be7a88e211789f3ac8dce4b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4e8357dd06dd6291457255acf6e57dbee6c5bc30be7a88e211789f3ac8dce4b7" "/opt/rustwide/cargo-home/bin/cargo" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e8357dd06dd6291457255acf6e57dbee6c5bc30be7a88e211789f3ac8dce4b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4e8357dd06dd6291457255acf6e57dbee6c5bc30be7a88e211789f3ac8dce4b7" "/opt/rustwide/cargo-home/bin/cargo" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]     Checking must_use_function v0.1.0 (/opt/rustwide/workdir/must_use_function)
[INFO] [stdout] warning: unused return value of `check_status` that must be used
[INFO] [stdout]  --> must_use_function/src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     check_status();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[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] 9 |     let _ = check_status();
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `check_status` that must be used
[INFO] [stdout]  --> must_use_function/src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     check_status();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[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] 9 |     let _ = check_status();
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking quote v1.0.37
[INFO] [stderr]     Checking syn v2.0.90
[INFO] [stderr]     Checking must_not_use v0.1.0 (/opt/rustwide/workdir/must_not_use)
[INFO] [stdout] warning: unused imports: `Field`, `FieldsNamed`, `Item`, and `parse_macro_input`
[INFO] [stdout]  --> must_not_use/src/structs.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::{parse_macro_input, Field, FieldsNamed, Ident, Item, ItemStruct};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^  ^^^^^  ^^^^^^^^^^^         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Field`, `FieldsNamed`, `Item`, and `parse_macro_input`
[INFO] [stdout]  --> must_not_use/src/structs.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::{parse_macro_input, Field, FieldsNamed, Ident, Item, ItemStruct};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^  ^^^^^  ^^^^^^^^^^^         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Field`, `FieldsNamed`, `Item`, `Variant`, and `parse_macro_input`
[INFO] [stdout]  --> must_not_use/src/enums.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::{parse_macro_input, Field, Fields, FieldsNamed, Ident, Item, ItemEnum, Variant};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^  ^^^^^          ^^^^^^^^^^^         ^^^^            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Field`, `FieldsNamed`, `Item`, `Variant`, and `parse_macro_input`
[INFO] [stdout]  --> must_not_use/src/enums.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::{parse_macro_input, Field, Fields, FieldsNamed, Ident, Item, ItemEnum, Variant};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^  ^^^^^          ^^^^^^^^^^^         ^^^^            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Field`, `FieldsNamed`, `Item`, and `parse_macro_input`
[INFO] [stdout]  --> must_not_use/src/structs.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::{parse_macro_input, Field, FieldsNamed, Ident, Item, ItemStruct};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^  ^^^^^  ^^^^^^^^^^^         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Field`, `FieldsNamed`, `Item`, `Variant`, and `parse_macro_input`
[INFO] [stdout]  --> must_not_use/src/enums.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::{parse_macro_input, Field, Fields, FieldsNamed, Ident, Item, ItemEnum, Variant};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^  ^^^^^          ^^^^^^^^^^^         ^^^^            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking example_function v0.1.0 (/opt/rustwide/workdir/example_function)
[INFO] [stderr]     Checking example_enum v0.1.0 (/opt/rustwide/workdir/example_enum)
[INFO] [stderr]     Checking example_struct v0.1.0 (/opt/rustwide/workdir/example_struct)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.67s
[INFO] running `Command { std: "docker" "inspect" "4e8357dd06dd6291457255acf6e57dbee6c5bc30be7a88e211789f3ac8dce4b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e8357dd06dd6291457255acf6e57dbee6c5bc30be7a88e211789f3ac8dce4b7", kill_on_drop: false }`
[INFO] [stdout] 4e8357dd06dd6291457255acf6e57dbee6c5bc30be7a88e211789f3ac8dce4b7
