[INFO] fetching crate extra_atomics 0.1.1...
[INFO] checking extra_atomics-0.1.1 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate extra_atomics 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate extra_atomics 0.1.1 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate extra_atomics 0.1.1
[INFO] finished tweaking crates.io crate extra_atomics 0.1.1
[INFO] tweaked toml for crates.io crate extra_atomics 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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] b34f47c99f5affad07ce11e870ab156e1d15e1991d66e3b7cb67f5f58b5c4d11
[INFO] running `Command { std: "docker" "start" "-a" "b34f47c99f5affad07ce11e870ab156e1d15e1991d66e3b7cb67f5f58b5c4d11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b34f47c99f5affad07ce11e870ab156e1d15e1991d66e3b7cb67f5f58b5c4d11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b34f47c99f5affad07ce11e870ab156e1d15e1991d66e3b7cb67f5f58b5c4d11", kill_on_drop: false }`
[INFO] [stdout] b34f47c99f5affad07ce11e870ab156e1d15e1991d66e3b7cb67f5f58b5c4d11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c72598d0b0cab398f8c36b69ff37ad416e1c2192ca257b4673805791451060e5
[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" "c72598d0b0cab398f8c36b69ff37ad416e1c2192ca257b4673805791451060e5", kill_on_drop: false }`
[INFO] [stderr]     Checking extra_atomics v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `sender`
[INFO] [stdout]    --> src/lib.rs:279:21
[INFO] [stdout]     |
[INFO] [stdout] 279 |                 let sender = sender;
[INFO] [stdout]     |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sender`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `RwLockTests`
[INFO] [stdout]    --> src/lib.rs:201:12
[INFO] [stdout]     |
[INFO] [stdout] 201 |     struct RwLockTests<T> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/lib.rs:206:12
[INFO] [stdout]     |
[INFO] [stdout] 206 |         fn new(init: Arc<T>) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `swap`
[INFO] [stdout]    --> src/lib.rs:212:12
[INFO] [stdout]     |
[INFO] [stdout] 212 |         fn swap(&self, new_value: Arc<T>) -> Result<Arc<T>, Arc<T>> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load`
[INFO] [stdout]    --> src/lib.rs:220:12
[INFO] [stdout]     |
[INFO] [stdout] 220 |         fn load(&self) -> Arc<T> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "c72598d0b0cab398f8c36b69ff37ad416e1c2192ca257b4673805791451060e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c72598d0b0cab398f8c36b69ff37ad416e1c2192ca257b4673805791451060e5", kill_on_drop: false }`
[INFO] [stdout] c72598d0b0cab398f8c36b69ff37ad416e1c2192ca257b4673805791451060e5