[INFO] updating cached repository https://github.com/yamafaktory/yume
[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] [stderr] From https://github.com/yamafaktory/yume
[INFO] [stderr]    78386d2..c28e8aa  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c28e8aa57161704bbac5b3677357d8179b405dcc
[INFO] checking yamafaktory/yume against try#3738e44c8fffe9e1fdfda9304a4df74ce7b29152 for pr-68746
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyamafaktory%2Fyume" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yamafaktory/yume on toolchain 3738e44c8fffe9e1fdfda9304a4df74ce7b29152
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3738e44c8fffe9e1fdfda9304a4df74ce7b29152" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/yamafaktory/yume
[INFO] finished tweaking git repo https://github.com/yamafaktory/yume
[INFO] tweaked toml for git repo https://github.com/yamafaktory/yume written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/yamafaktory/yume already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3738e44c8fffe9e1fdfda9304a4df74ce7b29152" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+3738e44c8fffe9e1fdfda9304a4df74ce7b29152" "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] 266619824eee1333be72b00189e762a1abfe109a8837fb2565ebb8d090d57dfe
[INFO] running `"docker" "start" "-a" "266619824eee1333be72b00189e762a1abfe109a8837fb2565ebb8d090d57dfe"`
[INFO] [stderr]     Checking subtle v2.2.2
[INFO] [stderr]     Checking zeroize v1.1.0
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling ring v0.16.10
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stderr]     Checking async-task v1.0.0
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking kv-log-macro v1.0.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling thiserror-impl v1.0.10
[INFO] [stderr]     Checking aead v0.2.0
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking universal-hash v0.3.0
[INFO] [stderr]     Checking chacha20 v0.3.3
[INFO] [stderr]     Checking parking_lot v0.10.0
[INFO] [stderr]     Checking poly1305 v0.5.2
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking chacha20poly1305 v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking signal-hook v0.1.13
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking crossterm v0.15.0
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking thiserror v1.0.10
[INFO] [stderr]     Checking broadcaster v0.2.6
[INFO] [stderr]     Checking async-std v1.4.0
[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]     Checking serde v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.46
[INFO] [stderr]     Checking yume v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `sender`
[INFO] [stderr]   --> src/udp_utils.rs:27:6
[INFO] [stderr]    |
[INFO] [stderr] 27 |     (sender, receiver): (Sender<Option<String>>, Receiver<Option<String>>),
[INFO] [stderr]    |      ^^^^^^ help: consider prefixing with an underscore: `_sender`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `receiver`
[INFO] [stderr]   --> src/udp_utils.rs:27:14
[INFO] [stderr]    |
[INFO] [stderr] 27 |     (sender, receiver): (Sender<Option<String>>, Receiver<Option<String>>),
[INFO] [stderr]    |              ^^^^^^^^ help: consider prefixing with an underscore: `_receiver`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `receiver`
[INFO] [stderr]   --> src/udp_utils.rs:78:14
[INFO] [stderr]    |
[INFO] [stderr] 78 |     (sender, receiver): (Sender<Option<String>>, Receiver<Option<String>>),
[INFO] [stderr]    |              ^^^^^^^^ help: consider prefixing with an underscore: `_receiver`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sent`
[INFO] [stderr]    --> src/udp_utils.rs:100:24
[INFO] [stderr]     |
[INFO] [stderr] 100 |                     Ok(sent) => {
[INFO] [stderr]     |                        ^^^^ help: consider prefixing with an underscore: `_sent`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sender`
[INFO] [stderr]   --> src/udp_utils.rs:27:6
[INFO] [stderr]    |
[INFO] [stderr] 27 |     (sender, receiver): (Sender<Option<String>>, Receiver<Option<String>>),
[INFO] [stderr]    |      ^^^^^^ help: consider prefixing with an underscore: `_sender`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `receiver`
[INFO] [stderr]   --> src/udp_utils.rs:27:14
[INFO] [stderr]    |
[INFO] [stderr] 27 |     (sender, receiver): (Sender<Option<String>>, Receiver<Option<String>>),
[INFO] [stderr]    |              ^^^^^^^^ help: consider prefixing with an underscore: `_receiver`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `receiver`
[INFO] [stderr]   --> src/udp_utils.rs:78:14
[INFO] [stderr]    |
[INFO] [stderr] 78 |     (sender, receiver): (Sender<Option<String>>, Receiver<Option<String>>),
[INFO] [stderr]    |              ^^^^^^^^ help: consider prefixing with an underscore: `_receiver`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sent`
[INFO] [stderr]    --> src/udp_utils.rs:100:24
[INFO] [stderr]     |
[INFO] [stderr] 100 |                     Ok(sent) => {
[INFO] [stderr]     |                        ^^^^ help: consider prefixing with an underscore: `_sent`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `"docker" "inspect" "266619824eee1333be72b00189e762a1abfe109a8837fb2565ebb8d090d57dfe"`
[INFO] running `"docker" "rm" "-f" "266619824eee1333be72b00189e762a1abfe109a8837fb2565ebb8d090d57dfe"`
[INFO] [stdout] 266619824eee1333be72b00189e762a1abfe109a8837fb2565ebb8d090d57dfe