[INFO] fetching crate internship 0.6.0...
[INFO] checking internship-0.6.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate internship 0.6.0 into /workspace/builds/worker-83/source
[INFO] validating manifest of crates.io crate internship 0.6.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate internship 0.6.0
[INFO] finished tweaking crates.io crate internship 0.6.0
[INFO] tweaked toml for crates.io crate internship 0.6.0 written to /workspace/builds/worker-83/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f4ffaccbca20780bda68158822c24d326a6159c22672dcf8c0acd8a8df149f9
[INFO] running `Command { std: "docker" "start" "-a" "6f4ffaccbca20780bda68158822c24d326a6159c22672dcf8c0acd8a8df149f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f4ffaccbca20780bda68158822c24d326a6159c22672dcf8c0acd8a8df149f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f4ffaccbca20780bda68158822c24d326a6159c22672dcf8c0acd8a8df149f9", kill_on_drop: false }`
[INFO] [stdout] 6f4ffaccbca20780bda68158822c24d326a6159c22672dcf8c0acd8a8df149f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7450343d5f5a612e6fcfd9e69fb3408aee3ae46da0c0190826e3464eb8112e13
[INFO] running `Command { std: "docker" "start" "-a" "7450343d5f5a612e6fcfd9e69fb3408aee3ae46da0c0190826e3464eb8112e13", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking internship v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/handle.rs:267:13
[INFO] [stdout]     |
[INFO] [stdout] 267 |             replace(&mut *pool.borrow_mut(), prev_pool);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `Command { std: "docker" "inspect" "7450343d5f5a612e6fcfd9e69fb3408aee3ae46da0c0190826e3464eb8112e13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7450343d5f5a612e6fcfd9e69fb3408aee3ae46da0c0190826e3464eb8112e13", kill_on_drop: false }`
[INFO] [stdout] 7450343d5f5a612e6fcfd9e69fb3408aee3ae46da0c0190826e3464eb8112e13
