[INFO] fetching crate rust-unixfs 0.4.1...
[INFO] checking rust-unixfs-0.4.1 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate rust-unixfs 0.4.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate rust-unixfs 0.4.1 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-unixfs 0.4.1
[INFO] finished tweaking crates.io crate rust-unixfs 0.4.1
[INFO] tweaked toml for crates.io crate rust-unixfs 0.4.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate rust-unixfs 0.4.1 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" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a3b9f888b4d0289d0df37f35ea9964765b734a108e2ad4ba03eb7c313693496
[INFO] running `Command { std: "docker" "start" "-a" "8a3b9f888b4d0289d0df37f35ea9964765b734a108e2ad4ba03eb7c313693496", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a3b9f888b4d0289d0df37f35ea9964765b734a108e2ad4ba03eb7c313693496", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a3b9f888b4d0289d0df37f35ea9964765b734a108e2ad4ba03eb7c313693496", kill_on_drop: false }`
[INFO] [stdout] 8a3b9f888b4d0289d0df37f35ea9964765b734a108e2ad4ba03eb7c313693496
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e78a4d6081bf0c3eaf6340dcc05e6444e6f1e093be844b4e6e0fcfe8985ca8b
[INFO] running `Command { std: "docker" "start" "-a" "5e78a4d6081bf0c3eaf6340dcc05e6444e6f1e093be844b4e6e0fcfe8985ca8b", kill_on_drop: false }`
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[INFO] [stderr]     Checking rust-unixfs v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `unwrap_borrowed` is never used
[INFO] [stdout]    --> src/file.rs:156:8
[INFO] [stdout]     |
[INFO] [stdout] 154 | pub(crate) trait UnwrapBorrowedExt<'a> {
[INFO] [stdout]     |                  ----------------- method in this trait
[INFO] [stdout] 155 |     /// Does not default but requires there to be an borrowed inner value.
[INFO] [stdout] 156 |     fn unwrap_borrowed(self) -> &'a [u8];
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.22s
[INFO] running `Command { std: "docker" "inspect" "5e78a4d6081bf0c3eaf6340dcc05e6444e6f1e093be844b4e6e0fcfe8985ca8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e78a4d6081bf0c3eaf6340dcc05e6444e6f1e093be844b4e6e0fcfe8985ca8b", kill_on_drop: false }`
[INFO] [stdout] 5e78a4d6081bf0c3eaf6340dcc05e6444e6f1e093be844b4e6e0fcfe8985ca8b