[INFO] updating cached repository https://github.com/akitsu-sanae/microps-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e217d2110e402a8a49909f08ea26725e2a9350cf
[INFO] checking akitsu-sanae/microps-rs against try#a243773eaf3fedcd203f10ae4579e4f106bf7ccd for pr-68325
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakitsu-sanae%2Fmicrops-rs" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/akitsu-sanae/microps-rs on toolchain a243773eaf3fedcd203f10ae4579e4f106bf7ccd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/akitsu-sanae/microps-rs
[INFO] finished tweaking git repo https://github.com/akitsu-sanae/microps-rs
[INFO] tweaked toml for git repo https://github.com/akitsu-sanae/microps-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/akitsu-sanae/microps-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "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] 235a6f806ad1d047e38afa7e67b1f1384c32644974f95273cd6042521fe89afc
[INFO] running `"docker" "start" "-a" "235a6f806ad1d047e38afa7e67b1f1384c32644974f95273cd6042521fe89afc"`
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking ifstructs v0.1.1
[INFO] [stderr]     Checking nix v0.15.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking arrayvec v0.3.25
[INFO] [stderr]     Checking arrayvec v0.4.11
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking hexdump v0.1.0
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking microps-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the feature `wait_timeout_until` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(wait_timeout_until)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::sync::MutexGuard` in tuple element 0 that must be used
[INFO] [stderr]   --> src/udp.rs:72:17
[INFO] [stderr]    |
[INFO] [stderr] 72 | /                 cond_pushed
[INFO] [stderr] 73 | |                     .wait_timeout(cb_table, ::std::time::Duration::from_secs(timeout as u64))?;
[INFO] [stderr]    | |_______________________________________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if unused the Mutex will immediately unlock
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/udp.rs:78:17
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 cond_pushed.wait(cb_table);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `wait_timeout_until` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(wait_timeout_until)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::sync::MutexGuard` in tuple element 0 that must be used
[INFO] [stderr]   --> src/udp.rs:72:17
[INFO] [stderr]    |
[INFO] [stderr] 72 | /                 cond_pushed
[INFO] [stderr] 73 | |                     .wait_timeout(cb_table, ::std::time::Duration::from_secs(timeout as u64))?;
[INFO] [stderr]    | |_______________________________________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if unused the Mutex will immediately unlock
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/udp.rs:78:17
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 cond_pushed.wait(cb_table);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.25s
[INFO] running `"docker" "inspect" "235a6f806ad1d047e38afa7e67b1f1384c32644974f95273cd6042521fe89afc"`
[INFO] running `"docker" "rm" "-f" "235a6f806ad1d047e38afa7e67b1f1384c32644974f95273cd6042521fe89afc"`
[INFO] [stdout] 235a6f806ad1d047e38afa7e67b1f1384c32644974f95273cd6042521fe89afc