[INFO] fetching crate crackle 0.2.3...
[INFO] checking crackle-0.2.3 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate crackle 0.2.3 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate crackle 0.2.3 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate crackle 0.2.3
[INFO] finished tweaking crates.io crate crackle 0.2.3
[INFO] tweaked toml for crates.io crate crackle 0.2.3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate crackle 0.2.3 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a4e69f2c249ce46f8e63959a57eb0cc288fd7d57a8c8f8e1af981855a060e1b
[INFO] running `Command { std: "docker" "start" "-a" "1a4e69f2c249ce46f8e63959a57eb0cc288fd7d57a8c8f8e1af981855a060e1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a4e69f2c249ce46f8e63959a57eb0cc288fd7d57a8c8f8e1af981855a060e1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a4e69f2c249ce46f8e63959a57eb0cc288fd7d57a8c8f8e1af981855a060e1b", kill_on_drop: false }`
[INFO] [stdout] 1a4e69f2c249ce46f8e63959a57eb0cc288fd7d57a8c8f8e1af981855a060e1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d5741bb6db35a3f04dd23cb404260a5f5af3ad2ab2bcbabd54e0efecea61222
[INFO] running `Command { std: "docker" "start" "-a" "7d5741bb6db35a3f04dd23cb404260a5f5af3ad2ab2bcbabd54e0efecea61222", kill_on_drop: false }`
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[INFO] [stderr]     Checking crackle v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/main.rs:141:15
[INFO] [stdout]     |
[INFO] [stdout] 141 |               .1
[INFO] [stdout]     |  _______________^
[INFO] [stdout] 142 | |             .clone()
[INFO] [stdout]     | |____________________^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/main.rs:141:15
[INFO] [stdout]     |
[INFO] [stdout] 141 |               .1
[INFO] [stdout]     |  _______________^
[INFO] [stdout] 142 | |             .clone()
[INFO] [stdout]     | |____________________^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 58.01s
[INFO] running `Command { std: "docker" "inspect" "7d5741bb6db35a3f04dd23cb404260a5f5af3ad2ab2bcbabd54e0efecea61222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d5741bb6db35a3f04dd23cb404260a5f5af3ad2ab2bcbabd54e0efecea61222", kill_on_drop: false }`
[INFO] [stdout] 7d5741bb6db35a3f04dd23cb404260a5f5af3ad2ab2bcbabd54e0efecea61222