[INFO] crate futures-rate 0.1.5 is already in cache
[INFO] checking futures-rate-0.1.5 against try#d7b51666469c792a8a3f40849607739bae1e705e for pr-71665
[INFO] extracting crate futures-rate 0.1.5 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate futures-rate 0.1.5 on toolchain d7b51666469c792a8a3f40849607739bae1e705e
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate futures-rate 0.1.5
[INFO] finished tweaking crates.io crate futures-rate 0.1.5
[INFO] tweaked toml for crates.io crate futures-rate 0.1.5 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate futures-rate 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] c4d97f01172bfc68eace426d0b828b3a31fcbc5149a27be93db784d7d915e026
[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" "c4d97f01172bfc68eace426d0b828b3a31fcbc5149a27be93db784d7d915e026"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]     Checking futures-sink v0.3.1
[INFO] [stderr]     Checking futures-task v0.3.1
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking futures-io v0.3.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]     Checking futures-rate v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/gatekeeper.rs:104:13
[INFO] [stderr]     |
[INFO] [stderr] 104 | /             (
[INFO] [stderr] 105 | |                 async move {
[INFO] [stderr] 106 | |                     ticket.await?;
[INFO] [stderr] 107 | |                     Ok(fut.await)
[INFO] [stderr] 108 | |                 }
[INFO] [stderr] 109 | |                 //            Token {},
[INFO] [stderr] 110 | |             ),
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 104 |             
[INFO] [stderr] 105 |                 async move {
[INFO] [stderr] 106 |                     ticket.await?;
[INFO] [stderr] 107 |                     Ok(fut.await)
[INFO] [stderr] 108 |                 }
[INFO] [stderr] 109 |                 //            Token {},
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr] warning: unused imports: `GateKeeperConfig`, `TokenPolicy`
[INFO] [stderr]  --> examples/cooperative_mode.rs:5:32
[INFO] [stderr]   |
[INFO] [stderr] 5 | use futures_rate::{GateKeeper, GateKeeperConfig, TokenPolicy};
[INFO] [stderr]   |                                ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/gatekeeper.rs:104:13
[INFO] [stderr]     |
[INFO] [stderr] 104 | /             (
[INFO] [stderr] 105 | |                 async move {
[INFO] [stderr] 106 | |                     ticket.await?;
[INFO] [stderr] 107 | |                     Ok(fut.await)
[INFO] [stderr] 108 | |                 }
[INFO] [stderr] 109 | |                 //            Token {},
[INFO] [stderr] 110 | |             ),
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 104 |             
[INFO] [stderr] 105 |                 async move {
[INFO] [stderr] 106 |                     ticket.await?;
[INFO] [stderr] 107 |                     Ok(fut.await)
[INFO] [stderr] 108 |                 }
[INFO] [stderr] 109 |                 //            Token {},
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/cooperative_mode.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let mut keeper = GateKeeper::new(1);
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.41s
[INFO] running `"docker" "inspect" "c4d97f01172bfc68eace426d0b828b3a31fcbc5149a27be93db784d7d915e026"`
[INFO] running `"docker" "rm" "-f" "c4d97f01172bfc68eace426d0b828b3a31fcbc5149a27be93db784d7d915e026"`
[INFO] [stdout] c4d97f01172bfc68eace426d0b828b3a31fcbc5149a27be93db784d7d915e026