[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#099af82bc034c1e4895c90e5407fafdd61976cdb for pr-145457
[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 099af82bc034c1e4895c90e5407fafdd61976cdb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "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" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2def6294c9182e2d48eea1a61a328cab4dd1a00601fc9d7ec9fed099014e90f8
[INFO] running `Command { std: "docker" "start" "-a" "2def6294c9182e2d48eea1a61a328cab4dd1a00601fc9d7ec9fed099014e90f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2def6294c9182e2d48eea1a61a328cab4dd1a00601fc9d7ec9fed099014e90f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2def6294c9182e2d48eea1a61a328cab4dd1a00601fc9d7ec9fed099014e90f8", kill_on_drop: false }`
[INFO] [stdout] 2def6294c9182e2d48eea1a61a328cab4dd1a00601fc9d7ec9fed099014e90f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+099af82bc034c1e4895c90e5407fafdd61976cdb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b299327070be5e001f2e51fc322bb256766d3528dd5655276eaf8e9ff7e858a
[INFO] running `Command { std: "docker" "start" "-a" "6b299327070be5e001f2e51fc322bb256766d3528dd5655276eaf8e9ff7e858a", 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)]` 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)]` 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)]` 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)]` 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)]` 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_struct v0.1.0 (/opt/rustwide/workdir/example_struct)
[INFO] [stderr]     Checking example_enum v0.1.0 (/opt/rustwide/workdir/example_enum)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.06s
[INFO] running `Command { std: "docker" "inspect" "6b299327070be5e001f2e51fc322bb256766d3528dd5655276eaf8e9ff7e858a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b299327070be5e001f2e51fc322bb256766d3528dd5655276eaf8e9ff7e858a", kill_on_drop: false }`
[INFO] [stdout] 6b299327070be5e001f2e51fc322bb256766d3528dd5655276eaf8e9ff7e858a