[INFO] fetching crate atomic_ref_box 0.1.0...
[INFO] checking atomic_ref_box-0.1.0 against try#1463461488056994d1b84e8b752e7c11c7fae7aa for pr-154205
[INFO] extracting crate atomic_ref_box 0.1.0 into /workspace/builds/worker-7-tc2/source
[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-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate atomic_ref_box 0.1.0 on toolchain 1463461488056994d1b84e8b752e7c11c7fae7aa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6a1a481aee51811ef545c6c321624978a7626cb5b04c76389e34e0cc594aa0a
[INFO] running `Command { std: "docker" "start" "-a" "c6a1a481aee51811ef545c6c321624978a7626cb5b04c76389e34e0cc594aa0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6a1a481aee51811ef545c6c321624978a7626cb5b04c76389e34e0cc594aa0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6a1a481aee51811ef545c6c321624978a7626cb5b04c76389e34e0cc594aa0a", kill_on_drop: false }`
[INFO] [stdout] c6a1a481aee51811ef545c6c321624978a7626cb5b04c76389e34e0cc594aa0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be128f6a8f136dcab47cd0dbdfcb21091be8f6857fbac59981c622f28d4fd2b2
[INFO] running `Command { std: "docker" "start" "-a" "be128f6a8f136dcab47cd0dbdfcb21091be8f6857fbac59981c622f28d4fd2b2", 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)]` (part of `#[warn(unused)]`) 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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:28:25
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn borrow(this: &Self) -> AtomicRef<T> {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn borrow(this: &Self) -> AtomicRef<'_, T> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:33:29
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn borrow_mut(this: &Self) -> AtomicMutRef<T> {
[INFO] [stdout]    |                             ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn borrow_mut(this: &Self) -> AtomicMutRef<'_, T> {
[INFO] [stdout]    |                                                    +++
[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)]` (part of `#[warn(unused)]`) 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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:28:25
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn borrow(this: &Self) -> AtomicRef<T> {
[INFO] [stdout]    |                         ^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn borrow(this: &Self) -> AtomicRef<'_, T> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:33:29
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn borrow_mut(this: &Self) -> AtomicMutRef<T> {
[INFO] [stdout]    |                             ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn borrow_mut(this: &Self) -> AtomicMutRef<'_, T> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "be128f6a8f136dcab47cd0dbdfcb21091be8f6857fbac59981c622f28d4fd2b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be128f6a8f136dcab47cd0dbdfcb21091be8f6857fbac59981c622f28d4fd2b2", kill_on_drop: false }`
[INFO] [stdout] be128f6a8f136dcab47cd0dbdfcb21091be8f6857fbac59981c622f28d4fd2b2