[INFO] fetching crate atomic_ref_box 0.1.0...
[INFO] checking atomic_ref_box-0.1.0 against try#0edd13c68435d50367c79cef43ac2768d2ec4f3d for pr-129422
[INFO] extracting crate atomic_ref_box 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate atomic_ref_box 0.1.0 on toolchain 0edd13c68435d50367c79cef43ac2768d2ec4f3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate atomic_ref_box 0.1.0
[INFO] finished tweaking crates.io crate atomic_ref_box 0.1.0
[INFO] tweaked toml for crates.io crate atomic_ref_box 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "fetch" "--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: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af9105ad67f2aa13cb9a979f9a2ec71c197c4f9f90180c9f2a2cd9410680261a
[INFO] running `Command { std: "docker" "start" "-a" "af9105ad67f2aa13cb9a979f9a2ec71c197c4f9f90180c9f2a2cd9410680261a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af9105ad67f2aa13cb9a979f9a2ec71c197c4f9f90180c9f2a2cd9410680261a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af9105ad67f2aa13cb9a979f9a2ec71c197c4f9f90180c9f2a2cd9410680261a", kill_on_drop: false }`
[INFO] [stdout] af9105ad67f2aa13cb9a979f9a2ec71c197c4f9f90180c9f2a2cd9410680261a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac7b5a530af12bab9ef0c31f2b17625394653fea22a0ccfd0360a199e94970d4
[INFO] running `Command { std: "docker" "start" "-a" "ac7b5a530af12bab9ef0c31f2b17625394653fea22a0ccfd0360a199e94970d4", kill_on_drop: false }`
[INFO] [stderr]     Checking atomic_ref_box v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `this`
[INFO] [stdout]   --> src/lib.rs:28:19
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn borrow(this: &Self) -> AtomicRef<T> {
[INFO] [stdout]    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_this`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `this`
[INFO] [stdout]   --> src/lib.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn borrow_mut(this: &Self) -> AtomicMutRef<T> {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_this`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `this`
[INFO] [stdout]   --> src/lib.rs:28:19
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn borrow(this: &Self) -> AtomicRef<T> {
[INFO] [stdout]    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_this`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `this`
[INFO] [stdout]   --> src/lib.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn borrow_mut(this: &Self) -> AtomicMutRef<T> {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_this`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "ac7b5a530af12bab9ef0c31f2b17625394653fea22a0ccfd0360a199e94970d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac7b5a530af12bab9ef0c31f2b17625394653fea22a0ccfd0360a199e94970d4", kill_on_drop: false }`
[INFO] [stdout] ac7b5a530af12bab9ef0c31f2b17625394653fea22a0ccfd0360a199e94970d4