[INFO] fetching crate either 1.9.0...
[INFO] checking either-1.9.0 against master#020bbe46bdf613c0b8211984eaa8e5fe97d6c92d for pr-122960
[INFO] extracting crate either 1.9.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate either 1.9.0 on toolchain 020bbe46bdf613c0b8211984eaa8e5fe97d6c92d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate either 1.9.0
[INFO] finished tweaking crates.io crate either 1.9.0
[INFO] tweaked toml for crates.io crate either 1.9.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a8d89912e2bdbef4824d310b03c51e6774f7f75ab8a88c2797d688c6106c932
[INFO] running `Command { std: "docker" "start" "-a" "2a8d89912e2bdbef4824d310b03c51e6774f7f75ab8a88c2797d688c6106c932", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a8d89912e2bdbef4824d310b03c51e6774f7f75ab8a88c2797d688c6106c932", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a8d89912e2bdbef4824d310b03c51e6774f7f75ab8a88c2797d688c6106c932", kill_on_drop: false }`
[INFO] [stdout] 2a8d89912e2bdbef4824d310b03c51e6774f7f75ab8a88c2797d688c6106c932
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 428084551fe8dfeeb8e771aca99e1be76bd639cdaa6797f54b5ba1303ee2c418
[INFO] running `Command { std: "docker" "start" "-a" "428084551fe8dfeeb8e771aca99e1be76bd639cdaa6797f54b5ba1303ee2c418", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]     Checking either v1.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `AsMut` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:27:21
[INFO] [stdout]    |
[INFO] [stdout] 27 | use core::convert::{AsMut, AsRef};
[INFO] [stdout]    |                     ^^^^^
[INFO] [stdout]   --> /rustc/020bbe46bdf613c0b8211984eaa8e5fe97d6c92d/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `AsMut` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsRef` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:27:28
[INFO] [stdout]    |
[INFO] [stdout] 27 | use core::convert::{AsMut, AsRef};
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]   --> /rustc/020bbe46bdf613c0b8211984eaa8e5fe97d6c92d/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `AsRef` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsMut` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:27:21
[INFO] [stdout]    |
[INFO] [stdout] 27 | use core::convert::{AsMut, AsRef};
[INFO] [stdout]    |                     ^^^^^
[INFO] [stdout]   --> /rustc/020bbe46bdf613c0b8211984eaa8e5fe97d6c92d/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `AsMut` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsRef` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:27:28
[INFO] [stdout]    |
[INFO] [stdout] 27 | use core::convert::{AsMut, AsRef};
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]   --> /rustc/020bbe46bdf613c0b8211984eaa8e5fe97d6c92d/library/core/src/prelude/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `AsRef` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::str::from_utf8` with a invalid literal always return an error
[INFO] [stdout]     --> src/lib.rs:1483:35
[INFO] [stdout]      |
[INFO] [stdout] 1482 |     let invalid_utf8 = b"\xff";
[INFO] [stdout]      |                        ------- the literal was valid UTF-8 up to the 0 bytes
[INFO] [stdout] 1483 |     let res = if let Err(error) = ::std::str::from_utf8(invalid_utf8) {
[INFO] [stdout]      |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(invalid_from_utf8)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.84s
[INFO] running `Command { std: "docker" "inspect" "428084551fe8dfeeb8e771aca99e1be76bd639cdaa6797f54b5ba1303ee2c418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "428084551fe8dfeeb8e771aca99e1be76bd639cdaa6797f54b5ba1303ee2c418", kill_on_drop: false }`
[INFO] [stdout] 428084551fe8dfeeb8e771aca99e1be76bd639cdaa6797f54b5ba1303ee2c418
[INFO] checking either-1.9.0 against try#8e5ca945edcf8a11e3cd7ac6d9fda930a8832cde for pr-122960
[INFO] extracting crate either 1.9.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate either 1.9.0 on toolchain 8e5ca945edcf8a11e3cd7ac6d9fda930a8832cde
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8e5ca945edcf8a11e3cd7ac6d9fda930a8832cde" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate either 1.9.0
[INFO] finished tweaking crates.io crate either 1.9.0
[INFO] tweaked toml for crates.io crate either 1.9.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8e5ca945edcf8a11e3cd7ac6d9fda930a8832cde" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8e5ca945edcf8a11e3cd7ac6d9fda930a8832cde" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+8e5ca945edcf8a11e3cd7ac6d9fda930a8832cde" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 301ba99d14be1356e8b4cc01674202fd783cf845a019907e899c8c49409ed045
[INFO] running `Command { std: "docker" "start" "-a" "301ba99d14be1356e8b4cc01674202fd783cf845a019907e899c8c49409ed045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "301ba99d14be1356e8b4cc01674202fd783cf845a019907e899c8c49409ed045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "301ba99d14be1356e8b4cc01674202fd783cf845a019907e899c8c49409ed045", kill_on_drop: false }`
[INFO] [stdout] 301ba99d14be1356e8b4cc01674202fd783cf845a019907e899c8c49409ed045
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+8e5ca945edcf8a11e3cd7ac6d9fda930a8832cde" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2158d0e20bfeb109e56088be015ffe71e7c88c6f9f75acdbaa6c41e506d613b
[INFO] running `Command { std: "docker" "start" "-a" "b2158d0e20bfeb109e56088be015ffe71e7c88c6f9f75acdbaa6c41e506d613b", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] skipping non-2021 edition `2018`
[INFO] running `Command { std: "docker" "inspect" "b2158d0e20bfeb109e56088be015ffe71e7c88c6f9f75acdbaa6c41e506d613b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2158d0e20bfeb109e56088be015ffe71e7c88c6f9f75acdbaa6c41e506d613b", kill_on_drop: false }`
[INFO] [stdout] b2158d0e20bfeb109e56088be015ffe71e7c88c6f9f75acdbaa6c41e506d613b