[INFO] fetching crate thincollections 0.5.3...
[INFO] checking thincollections-0.5.3 against master#e1beee4992ad4b235fc700bf7af1ee86f894ea53 for pr-74130
[INFO] extracting crate thincollections 0.5.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate thincollections 0.5.3 on toolchain e1beee4992ad4b235fc700bf7af1ee86f894ea53
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate thincollections 0.5.3
[INFO] finished tweaking crates.io crate thincollections 0.5.3
[INFO] tweaked toml for crates.io crate thincollections 0.5.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 958e29f97f20c552b74fef28ff3d1751f85be46738b5e0a9355e3035a8217910
[INFO] running `Command { std: "docker" "start" "-a" "958e29f97f20c552b74fef28ff3d1751f85be46738b5e0a9355e3035a8217910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "958e29f97f20c552b74fef28ff3d1751f85be46738b5e0a9355e3035a8217910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "958e29f97f20c552b74fef28ff3d1751f85be46738b5e0a9355e3035a8217910", kill_on_drop: false }`
[INFO] [stdout] 958e29f97f20c552b74fef28ff3d1751f85be46738b5e0a9355e3035a8217910
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5c3c17661b49c6c7a79b8a7440358de6dc767899e7ee4c46beb7c0ad7ed6b7c7
[INFO] running `Command { std: "docker" "start" "-a" "5c3c17661b49c6c7a79b8a7440358de6dc767899e7ee4c46beb7c0ad7ed6b7c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]     Checking thincollections v0.5.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/thin_sentinel.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     #[inline(always)]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/thin_sentinel.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     #[inline(always)]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking xoshiro v0.0.4
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/thin_vec.rs:1244:29
[INFO] [stdout]      |
[INFO] [stdout] 1244 |     pub fn into_boxed_slice(mut self) -> Box<[T]> {
[INFO] [stdout]      |                             ----^^^^
[INFO] [stdout]      |                             |
[INFO] [stdout]      |                             help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stdout] warning: unused import: `super::ThinSentinel`
[INFO] [stdout]     --> src/thin_map.rs:2135:9
[INFO] [stdout]      |
[INFO] [stdout] 2135 |     use super::ThinSentinel;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/thin_sentinel.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     #[inline(always)]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/thin_sentinel.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     #[inline(always)]
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/thin_vec.rs:1244:29
[INFO] [stdout]      |
[INFO] [stdout] 1244 |     pub fn into_boxed_slice(mut self) -> Box<[T]> {
[INFO] [stdout]      |                             ----^^^^
[INFO] [stdout]      |                             |
[INFO] [stdout]      |                             help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.36s
[INFO] running `Command { std: "docker" "inspect" "5c3c17661b49c6c7a79b8a7440358de6dc767899e7ee4c46beb7c0ad7ed6b7c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c3c17661b49c6c7a79b8a7440358de6dc767899e7ee4c46beb7c0ad7ed6b7c7", kill_on_drop: false }`
[INFO] [stdout] 5c3c17661b49c6c7a79b8a7440358de6dc767899e7ee4c46beb7c0ad7ed6b7c7