[INFO] fetching crate rubchev 0.1.2...
[INFO] testing rubchev-0.1.2 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate rubchev 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate rubchev 0.1.2
[INFO] finished tweaking crates.io crate rubchev 0.1.2
[INFO] tweaked toml for crates.io crate rubchev 0.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rubchev 0.1.2 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rubchev 0.1.2 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 47681137a84fa44a25985a97eb583179ebe590eb59eb56480ffbe2a4c9f1ac3f
[INFO] running `Command { std: "docker" "start" "-a" "47681137a84fa44a25985a97eb583179ebe590eb59eb56480ffbe2a4c9f1ac3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47681137a84fa44a25985a97eb583179ebe590eb59eb56480ffbe2a4c9f1ac3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47681137a84fa44a25985a97eb583179ebe590eb59eb56480ffbe2a4c9f1ac3f", kill_on_drop: false }`
[INFO] [stdout] 47681137a84fa44a25985a97eb583179ebe590eb59eb56480ffbe2a4c9f1ac3f
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef0aba35c69e0c1fb35accf4523149d56e40bb20504d12c64cb61589b1c5c939
[INFO] running `Command { std: "docker" "start" "-a" "ef0aba35c69e0c1fb35accf4523149d56e40bb20504d12c64cb61589b1c5c939", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.170
[INFO] [stderr]    Compiling serde v1.0.218
[INFO] [stderr]    Compiling quote v1.0.39
[INFO] [stderr]    Compiling syn v2.0.99
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling serde_derive v1.0.218
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rubchev v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Write` and `self`
[INFO] [stdout]  --> src/file_ops.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.09s
[INFO] running `Command { std: "docker" "inspect" "ef0aba35c69e0c1fb35accf4523149d56e40bb20504d12c64cb61589b1c5c939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef0aba35c69e0c1fb35accf4523149d56e40bb20504d12c64cb61589b1c5c939", kill_on_drop: false }`
[INFO] [stdout] ef0aba35c69e0c1fb35accf4523149d56e40bb20504d12c64cb61589b1c5c939
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] acf7b71233cf21a0cbb981dba4f9689ff604b568c28632f5e14935dd8da7c089
[INFO] running `Command { std: "docker" "start" "-a" "acf7b71233cf21a0cbb981dba4f9689ff604b568c28632f5e14935dd8da7c089", kill_on_drop: false }`
[INFO] [stdout] warning: unused imports: `Write` and `self`
[INFO] [stdout]  --> src/file_ops.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rubchev v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Write` and `self`
[INFO] [stdout]  --> src/file_ops.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "acf7b71233cf21a0cbb981dba4f9689ff604b568c28632f5e14935dd8da7c089", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acf7b71233cf21a0cbb981dba4f9689ff604b568c28632f5e14935dd8da7c089", kill_on_drop: false }`
[INFO] [stdout] acf7b71233cf21a0cbb981dba4f9689ff604b568c28632f5e14935dd8da7c089
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ed1bcf99cff19cecf19fe428c67e1ebba4293a94e871cf2851386cae8833c1fc
[INFO] running `Command { std: "docker" "start" "-a" "ed1bcf99cff19cecf19fe428c67e1ebba4293a94e871cf2851386cae8833c1fc", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Write` and `self`
[INFO] [stderr]  --> src/file_ops.rs:2:15
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{self, Write};
[INFO] [stderr]   |               ^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rubchev` (lib) generated 1 warning (run `cargo fix --lib -p rubchev` to apply 1 suggestion)
[INFO] [stderr] warning: `rubchev` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rubchev-2c2b83e7fc6c0403)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rubchev
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ed1bcf99cff19cecf19fe428c67e1ebba4293a94e871cf2851386cae8833c1fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed1bcf99cff19cecf19fe428c67e1ebba4293a94e871cf2851386cae8833c1fc", kill_on_drop: false }`
[INFO] [stdout] ed1bcf99cff19cecf19fe428c67e1ebba4293a94e871cf2851386cae8833c1fc