[INFO] fetching crate arbitrary 1.3.2...
[INFO] checking arbitrary-1.3.2 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate arbitrary 1.3.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate arbitrary 1.3.2 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arbitrary 1.3.2
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate arbitrary 1.3.2
[INFO] tweaked toml for crates.io crate arbitrary 1.3.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate arbitrary 1.3.2 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" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded exhaustigen v0.1.0
[INFO] [stderr]   Downloaded derive_arbitrary v1.3.2
[INFO] [stderr]   Downloaded syn v2.0.38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a99537030f6439cc2e73330bed4b89b54940caaab81f3aae5b7c00ebb238b87
[INFO] running `Command { std: "docker" "start" "-a" "8a99537030f6439cc2e73330bed4b89b54940caaab81f3aae5b7c00ebb238b87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a99537030f6439cc2e73330bed4b89b54940caaab81f3aae5b7c00ebb238b87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a99537030f6439cc2e73330bed4b89b54940caaab81f3aae5b7c00ebb238b87", kill_on_drop: false }`
[INFO] [stdout] 8a99537030f6439cc2e73330bed4b89b54940caaab81f3aae5b7c00ebb238b87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16080c760fc9712474eac3ed818f85e9cc169886a83450671b30c8bf81ebf415
[INFO] running `Command { std: "docker" "start" "-a" "16080c760fc9712474eac3ed818f85e9cc169886a83450671b30c8bf81ebf415", kill_on_drop: false }`
[INFO] [stderr]     Checking exhaustigen v0.1.0
[INFO] [stderr]     Checking arbitrary v1.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: the item `ToOwned` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:46:24
[INFO] [stdout]    |
[INFO] [stdout] 46 | use std::borrow::{Cow, ToOwned};
[INFO] [stdout]    |                        ^^^^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/prelude/mod.rs:125:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ToOwned` is already defined here
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | #![deny(unused)]
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `ToOwned` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:46:24
[INFO] [stdout]    |
[INFO] [stdout] 46 | use std::borrow::{Cow, ToOwned};
[INFO] [stdout]    |                        ^^^^^^^
[INFO] [stdout]   --> /rustc/b0696a5160711c068cb1f01b7437db7990d15750/library/std/src/prelude/mod.rs:125:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ToOwned` is already defined here
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | #![deny(unused)]
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arbitrary` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arbitrary` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "16080c760fc9712474eac3ed818f85e9cc169886a83450671b30c8bf81ebf415", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16080c760fc9712474eac3ed818f85e9cc169886a83450671b30c8bf81ebf415", kill_on_drop: false }`
[INFO] [stdout] 16080c760fc9712474eac3ed818f85e9cc169886a83450671b30c8bf81ebf415
[INFO] checking arbitrary-1.3.2 against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] extracting crate arbitrary 1.3.2 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate arbitrary 1.3.2 on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arbitrary 1.3.2
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate arbitrary 1.3.2
[INFO] tweaked toml for crates.io crate arbitrary 1.3.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate arbitrary 1.3.2 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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70651b0f74a8c3660ecf1ebf1a64a466538e62f4583afccf0eb0a394fcc535a8
[INFO] running `Command { std: "docker" "start" "-a" "70651b0f74a8c3660ecf1ebf1a64a466538e62f4583afccf0eb0a394fcc535a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70651b0f74a8c3660ecf1ebf1a64a466538e62f4583afccf0eb0a394fcc535a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70651b0f74a8c3660ecf1ebf1a64a466538e62f4583afccf0eb0a394fcc535a8", kill_on_drop: false }`
[INFO] [stdout] 70651b0f74a8c3660ecf1ebf1a64a466538e62f4583afccf0eb0a394fcc535a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b1dc1bfd8bcbb8a20e8082df8e3740c8199ff59e14251eb05b789990ceac959
[INFO] running `Command { std: "docker" "start" "-a" "1b1dc1bfd8bcbb8a20e8082df8e3740c8199ff59e14251eb05b789990ceac959", kill_on_drop: false }`
[INFO] [stderr]     Checking exhaustigen v0.1.0
[INFO] [stderr]     Checking arbitrary v1.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: the item `ToOwned` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:46:24
[INFO] [stdout]    |
[INFO] [stdout] 46 | use std::borrow::{Cow, ToOwned};
[INFO] [stdout]    |                        ^^^^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/prelude/mod.rs:125:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ToOwned` is already defined here
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | #![deny(unused)]
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the item `ToOwned` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:46:24
[INFO] [stdout]    |
[INFO] [stdout] 46 | use std::borrow::{Cow, ToOwned};
[INFO] [stdout]    |                        ^^^^^^^
[INFO] [stdout]   --> /rustc/bfe97fcae016881ad333f0ff8cea2cadb9cf136c/library/std/src/prelude/mod.rs:125:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `ToOwned` is already defined here
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 | #![deny(unused)]
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arbitrary` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arbitrary` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1b1dc1bfd8bcbb8a20e8082df8e3740c8199ff59e14251eb05b789990ceac959", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b1dc1bfd8bcbb8a20e8082df8e3740c8199ff59e14251eb05b789990ceac959", kill_on_drop: false }`
[INFO] [stdout] 1b1dc1bfd8bcbb8a20e8082df8e3740c8199ff59e14251eb05b789990ceac959
