[INFO] fetching crate hyeong 0.2.2...
[INFO] checking hyeong-0.2.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate hyeong 0.2.2 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate hyeong 0.2.2 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hyeong 0.2.2
[INFO] finished tweaking crates.io crate hyeong 0.2.2
[INFO] tweaked toml for crates.io crate hyeong 0.2.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate hyeong 0.2.2 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ctrlc v3.1.6
[INFO] [stderr]   Downloaded termcolor v1.1.0
[INFO] [stderr]   Downloaded cc v1.0.59
[INFO] [stderr]   Downloaded nix v0.17.0
[INFO] [stderr]   Downloaded libc v0.2.76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6858c274f318cbd2c949b20cb8c904964e9bd43c02264429eaa33388775968a
[INFO] running `Command { std: "docker" "start" "-a" "a6858c274f318cbd2c949b20cb8c904964e9bd43c02264429eaa33388775968a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6858c274f318cbd2c949b20cb8c904964e9bd43c02264429eaa33388775968a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6858c274f318cbd2c949b20cb8c904964e9bd43c02264429eaa33388775968a", kill_on_drop: false }`
[INFO] [stdout] a6858c274f318cbd2c949b20cb8c904964e9bd43c02264429eaa33388775968a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66001da4786ea7d85bca32dbeee126e0f9d4c02d6146a7ea5ec199ccbfc571c2
[INFO] running `Command { std: "docker" "start" "-a" "66001da4786ea7d85bca32dbeee126e0f9d4c02d6146a7ea5ec199ccbfc571c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking ctrlc v3.1.6
[INFO] [stderr]     Checking hyeong v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/app/check.rs:46:18
[INFO] [stdout]    |
[INFO] [stdout] 46 |           .unwrap()
[INFO] [stdout]    |  __________________^
[INFO] [stdout] 47 | |         .clone()
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `OsStr` does not implement `Clone`, so calling `clone` on `&OsStr` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 46 -         .unwrap()
[INFO] [stdout] 47 -         .clone()
[INFO] [stdout] 46 +         .unwrap()
[INFO] [stdout]    |
[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/app/check.rs:46:18
[INFO] [stdout]    |
[INFO] [stdout] 46 |           .unwrap()
[INFO] [stdout]    |  __________________^
[INFO] [stdout] 47 | |         .clone()
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `OsStr` does not implement `Clone`, so calling `clone` on `&OsStr` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 46 -         .unwrap()
[INFO] [stdout] 47 -         .clone()
[INFO] [stdout] 46 +         .unwrap()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.04s
[INFO] running `Command { std: "docker" "inspect" "66001da4786ea7d85bca32dbeee126e0f9d4c02d6146a7ea5ec199ccbfc571c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66001da4786ea7d85bca32dbeee126e0f9d4c02d6146a7ea5ec199ccbfc571c2", kill_on_drop: false }`
[INFO] [stdout] 66001da4786ea7d85bca32dbeee126e0f9d4c02d6146a7ea5ec199ccbfc571c2
[INFO] checking hyeong-0.2.2 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate hyeong 0.2.2 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate hyeong 0.2.2 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hyeong 0.2.2
[INFO] finished tweaking crates.io crate hyeong 0.2.2
[INFO] tweaked toml for crates.io crate hyeong 0.2.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate hyeong 0.2.2 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01ae11dc37e84979c3935f74ee5c5ffadcbf8d77d8534f546876a1614e2c559c
[INFO] running `Command { std: "docker" "start" "-a" "01ae11dc37e84979c3935f74ee5c5ffadcbf8d77d8534f546876a1614e2c559c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01ae11dc37e84979c3935f74ee5c5ffadcbf8d77d8534f546876a1614e2c559c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01ae11dc37e84979c3935f74ee5c5ffadcbf8d77d8534f546876a1614e2c559c", kill_on_drop: false }`
[INFO] [stdout] 01ae11dc37e84979c3935f74ee5c5ffadcbf8d77d8534f546876a1614e2c559c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4aa6bcdf4df70bc1a23b49f54428222efd61322a9c21cff46b86010e22a11fc
[INFO] running `Command { std: "docker" "start" "-a" "d4aa6bcdf4df70bc1a23b49f54428222efd61322a9c21cff46b86010e22a11fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking ctrlc v3.1.6
[INFO] [stderr]     Checking hyeong v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/app/check.rs:46:18
[INFO] [stdout]    |
[INFO] [stdout] 46 |           .unwrap()
[INFO] [stdout]    |  __________________^
[INFO] [stdout] 47 | |         .clone()
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `OsStr` does not implement `Clone`, so calling `clone` on `&OsStr` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 46 -         .unwrap()
[INFO] [stdout] 47 -         .clone()
[INFO] [stdout] 46 +         .unwrap()
[INFO] [stdout]    |
[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/app/check.rs:46:18
[INFO] [stdout]    |
[INFO] [stdout] 46 |           .unwrap()
[INFO] [stdout]    |  __________________^
[INFO] [stdout] 47 | |         .clone()
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `OsStr` does not implement `Clone`, so calling `clone` on `&OsStr` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 46 -         .unwrap()
[INFO] [stdout] 47 -         .clone()
[INFO] [stdout] 46 +         .unwrap()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.98s
[INFO] running `Command { std: "docker" "inspect" "d4aa6bcdf4df70bc1a23b49f54428222efd61322a9c21cff46b86010e22a11fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4aa6bcdf4df70bc1a23b49f54428222efd61322a9c21cff46b86010e22a11fc", kill_on_drop: false }`
[INFO] [stdout] d4aa6bcdf4df70bc1a23b49f54428222efd61322a9c21cff46b86010e22a11fc