[INFO] fetching crate contiguous-mem 0.4.2...
[INFO] checking contiguous-mem-0.4.2 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate contiguous-mem 0.4.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate contiguous-mem 0.4.2 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 contiguous-mem 0.4.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate contiguous-mem 0.4.2
[INFO] tweaked toml for crates.io crate contiguous-mem 0.4.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate contiguous-mem 0.4.2 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" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 25e4db5e4b499e3aa5723adee7504223992fbfc9299aeecea0f2414f7119561e
[INFO] running `Command { std: "docker" "start" "-a" "25e4db5e4b499e3aa5723adee7504223992fbfc9299aeecea0f2414f7119561e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25e4db5e4b499e3aa5723adee7504223992fbfc9299aeecea0f2414f7119561e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25e4db5e4b499e3aa5723adee7504223992fbfc9299aeecea0f2414f7119561e", kill_on_drop: false }`
[INFO] [stdout] 25e4db5e4b499e3aa5723adee7504223992fbfc9299aeecea0f2414f7119561e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 0fb016a86e04dd2a3a99cc45769b77de1ab556c5911d9afc2d41312931e3a262
[INFO] running `Command { std: "docker" "start" "-a" "0fb016a86e04dd2a3a99cc45769b77de1ab556c5911d9afc2d41312931e3a262", kill_on_drop: false }`
[INFO] [stderr]     Checking contiguous-mem v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `try_lock_named` is never used
[INFO] [stdout]   --> src/types.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub(crate) trait MutexTypesafe<T: ?Sized> {
[INFO] [stdout]    |                  ------------- method in this trait
[INFO] [stdout] 42 |     fn lock_named(&self, source: LockSource) -> Result<MutexGuard<T>, crate::error::LockingError>;
[INFO] [stdout] 43 |     fn try_lock_named(
[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] [stdout] warning: method `try_lock_named` is never used
[INFO] [stdout]   --> src/types.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub(crate) trait MutexTypesafe<T: ?Sized> {
[INFO] [stdout]    |                  ------------- method in this trait
[INFO] [stdout] 42 |     fn lock_named(&self, source: LockSource) -> Result<MutexGuard<T>, crate::error::LockingError>;
[INFO] [stdout] 43 |     fn try_lock_named(
[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 0.63s
[INFO] running `Command { std: "docker" "inspect" "0fb016a86e04dd2a3a99cc45769b77de1ab556c5911d9afc2d41312931e3a262", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fb016a86e04dd2a3a99cc45769b77de1ab556c5911d9afc2d41312931e3a262", kill_on_drop: false }`
[INFO] [stdout] 0fb016a86e04dd2a3a99cc45769b77de1ab556c5911d9afc2d41312931e3a262