[INFO] fetching crate slaballoc 0.1.1...
[INFO] checking slaballoc-0.1.1 against master#f7b43542838f0a4a6cfdb17fbeadf45002042a77 for pr-138499
[INFO] extracting crate slaballoc 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate slaballoc 0.1.1 on toolchain f7b43542838f0a4a6cfdb17fbeadf45002042a77
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f7b43542838f0a4a6cfdb17fbeadf45002042a77" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slaballoc 0.1.1
[INFO] finished tweaking crates.io crate slaballoc 0.1.1
[INFO] tweaked toml for crates.io crate slaballoc 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f7b43542838f0a4a6cfdb17fbeadf45002042a77" "generate-lockfile" "--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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f7b43542838f0a4a6cfdb17fbeadf45002042a77" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+f7b43542838f0a4a6cfdb17fbeadf45002042a77" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07555dbcfd83058816e380a8e44430d13151f3c7576667c146f2a1d31e747814
[INFO] running `Command { std: "docker" "start" "-a" "07555dbcfd83058816e380a8e44430d13151f3c7576667c146f2a1d31e747814", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07555dbcfd83058816e380a8e44430d13151f3c7576667c146f2a1d31e747814", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07555dbcfd83058816e380a8e44430d13151f3c7576667c146f2a1d31e747814", kill_on_drop: false }`
[INFO] [stdout] 07555dbcfd83058816e380a8e44430d13151f3c7576667c146f2a1d31e747814
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+f7b43542838f0a4a6cfdb17fbeadf45002042a77" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8859421e0ea053cd921941139ffa3cc2f7f1a4f30fe81147b20cf048bf445a8
[INFO] running `Command { std: "docker" "start" "-a" "c8859421e0ea053cd921941139ffa3cc2f7f1a4f30fe81147b20cf048bf445a8", kill_on_drop: false }`
[INFO] [stderr]     Checking slaballoc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `core::mem::MaybeUninit::<T>::slice_assume_init_mut`: replaced by inherent assume_init_mut method; will eventually be removed
[INFO] [stdout]   --> src/slab.rs:93:35
[INFO] [stdout]    |
[INFO] [stdout] 93 |             unsafe { MaybeUninit::slice_assume_init_mut(bitmap) }
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::mem::MaybeUninit::<T>::slice_assume_init_mut`: replaced by inherent assume_init_mut method; will eventually be removed
[INFO] [stdout]   --> src/slab.rs:93:35
[INFO] [stdout]    |
[INFO] [stdout] 93 |             unsafe { MaybeUninit::slice_assume_init_mut(bitmap) }
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]    --> src/slab.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 225 |         struct Element {
[INFO] [stdout]     |                ------- field in this struct
[INFO] [stdout] 226 |             data: usize,
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Element` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "c8859421e0ea053cd921941139ffa3cc2f7f1a4f30fe81147b20cf048bf445a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8859421e0ea053cd921941139ffa3cc2f7f1a4f30fe81147b20cf048bf445a8", kill_on_drop: false }`
[INFO] [stdout] c8859421e0ea053cd921941139ffa3cc2f7f1a4f30fe81147b20cf048bf445a8