[INFO] fetching crate thincollections 0.5.3...
[INFO] checking thincollections-0.5.3 against try#1c5262aa6c045a581fb974488793f09ed51fc498 for pr-78376
[INFO] extracting crate thincollections 0.5.3 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate thincollections 0.5.3 on toolchain 1c5262aa6c045a581fb974488793f09ed51fc498
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "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-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef155ce87e268cc615eacde74f3735be5414b95921c718446869a9caad4f2d55
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ef155ce87e268cc615eacde74f3735be5414b95921c718446869a9caad4f2d55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef155ce87e268cc615eacde74f3735be5414b95921c718446869a9caad4f2d55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef155ce87e268cc615eacde74f3735be5414b95921c718446869a9caad4f2d55", kill_on_drop: false }`
[INFO] [stdout] ef155ce87e268cc615eacde74f3735be5414b95921c718446869a9caad4f2d55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5bb99fa7b632800afbd0d5b3e48d5031566feb5565cd530075be868f4102ee0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b5bb99fa7b632800afbd0d5b3e48d5031566feb5565cd530075be868f4102ee0", kill_on_drop: false }`
[INFO] [stderr]     Checking thincollections v0.5.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking xoshiro v0.0.4
[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: 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 13.43s
[INFO] running `Command { std: "docker" "inspect" "b5bb99fa7b632800afbd0d5b3e48d5031566feb5565cd530075be868f4102ee0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5bb99fa7b632800afbd0d5b3e48d5031566feb5565cd530075be868f4102ee0", kill_on_drop: false }`
[INFO] [stdout] b5bb99fa7b632800afbd0d5b3e48d5031566feb5565cd530075be868f4102ee0