[INFO] fetching crate fsrenamer 0.2.1...
[INFO] checking fsrenamer-0.2.1 against try#50f413885985a8b0a0b6ca0766a0aedd45304953 for pr-155657-1
[INFO] extracting crate fsrenamer 0.2.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate fsrenamer 0.2.1
[INFO] finished tweaking crates.io crate fsrenamer 0.2.1
[INFO] tweaked toml for crates.io crate fsrenamer 0.2.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fsrenamer 0.2.1 on toolchain 50f413885985a8b0a0b6ca0766a0aedd45304953
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fsrenamer 0.2.1 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" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6fcc1eed7dbd18bbf9fed4ca017d04c64a40a040e62d1384a0031e7c2d490bf
[INFO] running `Command { std: "docker" "start" "-a" "d6fcc1eed7dbd18bbf9fed4ca017d04c64a40a040e62d1384a0031e7c2d490bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6fcc1eed7dbd18bbf9fed4ca017d04c64a40a040e62d1384a0031e7c2d490bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6fcc1eed7dbd18bbf9fed4ca017d04c64a40a040e62d1384a0031e7c2d490bf", kill_on_drop: false }`
[INFO] [stdout] d6fcc1eed7dbd18bbf9fed4ca017d04c64a40a040e62d1384a0031e7c2d490bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f88f7e92c6797fbd45f523d0444b95d504f8e12ef38915299bca63dfe2d5c88
[INFO] running `Command { std: "docker" "start" "-a" "6f88f7e92c6797fbd45f523d0444b95d504f8e12ef38915299bca63dfe2d5c88", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Checking fsrenamer v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]   --> src/lib.rs:89:30
[INFO] [stdout]    |
[INFO] [stdout] 89 |         Err(e) => return Err(Box::new(e)),
[INFO] [stdout]    |                              ^^^^^^^^ - any code following this expression is unreachable
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable call
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `(): std::error::Error` is not satisfied
[INFO] [stdout]   --> src/lib.rs:89:30
[INFO] [stdout]    |
[INFO] [stdout] 89 |         Err(e) => return Err(Box::new(e)),
[INFO] [stdout]    |                              ^^^^^^^^^^^ the trait `std::error::Error` is not implemented for `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for the cast from `Box<()>` to `Box<dyn std::error::Error>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fsrenamer` (lib test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unreachable call
[INFO] [stdout]   --> src/lib.rs:89:30
[INFO] [stdout]    |
[INFO] [stdout] 89 |         Err(e) => return Err(Box::new(e)),
[INFO] [stdout]    |                              ^^^^^^^^ - any code following this expression is unreachable
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              unreachable call
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `(): std::error::Error` is not satisfied
[INFO] [stdout]   --> src/lib.rs:89:30
[INFO] [stdout]    |
[INFO] [stdout] 89 |         Err(e) => return Err(Box::new(e)),
[INFO] [stdout]    |                              ^^^^^^^^^^^ the trait `std::error::Error` is not implemented for `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for the cast from `Box<()>` to `Box<dyn std::error::Error>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fsrenamer` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "6f88f7e92c6797fbd45f523d0444b95d504f8e12ef38915299bca63dfe2d5c88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f88f7e92c6797fbd45f523d0444b95d504f8e12ef38915299bca63dfe2d5c88", kill_on_drop: false }`
[INFO] [stdout] 6f88f7e92c6797fbd45f523d0444b95d504f8e12ef38915299bca63dfe2d5c88