[INFO] fetching crate trivial-argument-parser 0.1.0... [INFO] checking trivial-argument-parser-0.1.0 against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819 [INFO] extracting crate trivial-argument-parser 0.1.0 into /workspace/builds/worker-8/source [INFO] validating manifest of crates.io crate trivial-argument-parser 0.1.0 on toolchain 4a04890980766cc79878135f5ade8c0c4321e943 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate trivial-argument-parser 0.1.0 [INFO] finished tweaking crates.io crate trivial-argument-parser 0.1.0 [INFO] tweaked toml for crates.io crate trivial-argument-parser 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1e53b6c3b6ab6f6a84075c695bd57560bdb9cdd79792c1542fc82fbcd3838ded [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "1e53b6c3b6ab6f6a84075c695bd57560bdb9cdd79792c1542fc82fbcd3838ded", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1e53b6c3b6ab6f6a84075c695bd57560bdb9cdd79792c1542fc82fbcd3838ded", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1e53b6c3b6ab6f6a84075c695bd57560bdb9cdd79792c1542fc82fbcd3838ded", kill_on_drop: false }` [INFO] [stdout] 1e53b6c3b6ab6f6a84075c695bd57560bdb9cdd79792c1542fc82fbcd3838ded [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] dfac6c12e289382eac2181596e6b750b0d152e343d3e9dfa7ecefe8bf2ba5a84 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "dfac6c12e289382eac2181596e6b750b0d152e343d3e9dfa7ecefe8bf2ba5a84", kill_on_drop: false }` [INFO] [stderr] Checking trivial-argument-parser v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `chars` [INFO] [stdout] --> src/lib.rs:244:21 [INFO] [stdout] | [INFO] [stdout] 244 | let mut chars = word.chars(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_chars` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:244:17 [INFO] [stdout] | [INFO] [stdout] 244 | let mut chars = word.chars(); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `chars` [INFO] [stdout] --> src/lib.rs:244:21 [INFO] [stdout] | [INFO] [stdout] 244 | let mut chars = word.chars(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_chars` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:254:29 [INFO] [stdout] | [INFO] [stdout] 254 | ... argument.add_value(& mut input_iter); [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/lib.rs:277:29 [INFO] [stdout] | [INFO] [stdout] 277 | ... argument.add_value(& mut input_iter); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:244:17 [INFO] [stdout] | [INFO] [stdout] 244 | let mut chars = word.chars(); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:254:29 [INFO] [stdout] | [INFO] [stdout] 254 | ... argument.add_value(& mut input_iter); [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/lib.rs:277:29 [INFO] [stdout] | [INFO] [stdout] 277 | ... argument.add_value(& mut input_iter); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.42s [INFO] running `Command { std: "docker" "inspect" "dfac6c12e289382eac2181596e6b750b0d152e343d3e9dfa7ecefe8bf2ba5a84", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dfac6c12e289382eac2181596e6b750b0d152e343d3e9dfa7ecefe8bf2ba5a84", kill_on_drop: false }` [INFO] [stdout] dfac6c12e289382eac2181596e6b750b0d152e343d3e9dfa7ecefe8bf2ba5a84