[INFO] fetching crate libosu 0.0.8...
[INFO] checking libosu-0.0.8 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate libosu 0.0.8 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate libosu 0.0.8 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate libosu 0.0.8
[INFO] finished tweaking crates.io crate libosu 0.0.8
[INFO] tweaked toml for crates.io crate libosu 0.0.8 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 981b6e1815162b78f732e5e3d745ea6667debabd8241b95413e29d01945bd19e
[INFO] running `"docker" "start" "-a" "981b6e1815162b78f732e5e3d745ea6667debabd8241b95413e29d01945bd19e"`
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking native-tls v0.2.3
[INFO] [stderr]     Checking num-bigint v0.2.3
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-udp v0.1.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking libosu v0.0.8 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::collections::BTreeSet`
[INFO] [stderr]  --> src/beatmap.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::BTreeSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::BTreeSet`
[INFO] [stderr]  --> src/beatmap.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::BTreeSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/beatmap.rs:190:13
[INFO] [stderr]     |
[INFO] [stderr] 190 |         for mut hit_object in self.hit_objects.iter() {
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/beatmap.rs:190:13
[INFO] [stderr]     |
[INFO] [stderr] 190 |         for mut hit_object in self.hit_objects.iter() {
[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: method is never used: `associate_hitobjects`
[INFO] [stderr]    --> src/beatmap.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     pub(crate) fn associate_hitobjects(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `associate_hitobjects`
[INFO] [stderr]    --> src/beatmap.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     pub(crate) fn associate_hitobjects(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> tests/test_serde.rs:7:21
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::{Read, Write};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.24s
[INFO] running `"docker" "inspect" "981b6e1815162b78f732e5e3d745ea6667debabd8241b95413e29d01945bd19e"`
[INFO] running `"docker" "rm" "-f" "981b6e1815162b78f732e5e3d745ea6667debabd8241b95413e29d01945bd19e"`
[INFO] [stdout] 981b6e1815162b78f732e5e3d745ea6667debabd8241b95413e29d01945bd19e