[INFO] crate promises 0.2.0 is already in cache
[INFO] checking promises-0.2.0 against try#d7b51666469c792a8a3f40849607739bae1e705e for pr-71665
[INFO] extracting crate promises 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate promises 0.2.0 on toolchain d7b51666469c792a8a3f40849607739bae1e705e
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate promises 0.2.0
[INFO] finished tweaking crates.io crate promises 0.2.0
[INFO] tweaked toml for crates.io crate promises 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "/opt/rustwide/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 941c6f566316dd434fdb723e8853470a960cbd61d47b13a63f778d2a86481c5f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "941c6f566316dd434fdb723e8853470a960cbd61d47b13a63f778d2a86481c5f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking promises v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/lib.rs:238:9
[INFO] [stderr]     |
[INFO] [stderr] 238 |         'outer: loop {
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/lib.rs:261:9
[INFO] [stderr]     |
[INFO] [stderr] 261 |         'outer: loop {
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/tests.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/lib.rs:238:9
[INFO] [stderr]     |
[INFO] [stderr] 238 |         'outer: loop {
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/lib.rs:261:9
[INFO] [stderr]     |
[INFO] [stderr] 261 |         'outer: loop {
[INFO] [stderr]     |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]   --> src/tests.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 |         Ok(file) => println!("Created a file!"),
[INFO] [stderr]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/tests.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let p: Promise<(), ()> = Promise::new(|| {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_file`
[INFO] [stderr]   --> src/tests.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn create_file() -> Result<File, io::Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `"docker" "inspect" "941c6f566316dd434fdb723e8853470a960cbd61d47b13a63f778d2a86481c5f"`
[INFO] running `"docker" "rm" "-f" "941c6f566316dd434fdb723e8853470a960cbd61d47b13a63f778d2a86481c5f"`
[INFO] [stdout] 941c6f566316dd434fdb723e8853470a960cbd61d47b13a63f778d2a86481c5f