[INFO] updating cached repository https://github.com/Aaqib-kk/Asynchronous_Rust
[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] b6f6d0c78506276315082121254c108c69f997c9
[INFO] testing Aaqib-kk/Asynchronous_Rust against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAaqib-kk%2FAsynchronous_Rust" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/Aaqib-kk/Asynchronous_Rust on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Aaqib-kk/Asynchronous_Rust
[INFO] finished tweaking git repo https://github.com/Aaqib-kk/Asynchronous_Rust
[INFO] tweaked toml for git repo https://github.com/Aaqib-kk/Asynchronous_Rust written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/Aaqib-kk/Asynchronous_Rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] d72890de8ab8e9ba8f7c780368b7783ca75c19aeb4005be7315ee6c72a3bfa05
[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" "d72890de8ab8e9ba8f7c780368b7783ca75c19aeb4005be7315ee6c72a3bfa05"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling futures-io v0.3.4
[INFO] [stderr]    Compiling futures-sink v0.3.4
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling async-task v1.3.1
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling futures-channel v0.3.4
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling async-std v1.5.0
[INFO] [stderr]    Compiling futures-util v0.3.4
[INFO] [stderr]    Compiling futures-executor v0.3.4
[INFO] [stderr]    Compiling futures v0.3.4
[INFO] [stderr]    Compiling async_1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]    --> src/main.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 | use std::thread;
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f1`
[INFO] [stderr]    --> src/main.rs:200:9
[INFO] [stderr]     |
[INFO] [stderr] 200 |     let f1 = learn_song().await;
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_f1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f2`
[INFO] [stderr]    --> src/main.rs:201:9
[INFO] [stderr]     |
[INFO] [stderr] 201 |     let f2 = sing_song().await;
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_f2`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.53s
[INFO] running `"docker" "inspect" "d72890de8ab8e9ba8f7c780368b7783ca75c19aeb4005be7315ee6c72a3bfa05"`
[INFO] running `"docker" "rm" "-f" "d72890de8ab8e9ba8f7c780368b7783ca75c19aeb4005be7315ee6c72a3bfa05"`
[INFO] [stdout] d72890de8ab8e9ba8f7c780368b7783ca75c19aeb4005be7315ee6c72a3bfa05
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0a78203fba25e9733927771b4fe0da1d3f76cf2a68da6d5f27bd4b6473cd8568
[INFO] running `"docker" "start" "-a" "0a78203fba25e9733927771b4fe0da1d3f76cf2a68da6d5f27bd4b6473cd8568"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling async_1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]    --> src/main.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 | use std::thread;
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f1`
[INFO] [stderr]    --> src/main.rs:200:9
[INFO] [stderr]     |
[INFO] [stderr] 200 |     let f1 = learn_song().await;
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_f1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f2`
[INFO] [stderr]    --> src/main.rs:201:9
[INFO] [stderr]     |
[INFO] [stderr] 201 |     let f2 = sing_song().await;
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_f2`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `"docker" "inspect" "0a78203fba25e9733927771b4fe0da1d3f76cf2a68da6d5f27bd4b6473cd8568"`
[INFO] running `"docker" "rm" "-f" "0a78203fba25e9733927771b4fe0da1d3f76cf2a68da6d5f27bd4b6473cd8568"`
[INFO] [stdout] 0a78203fba25e9733927771b4fe0da1d3f76cf2a68da6d5f27bd4b6473cd8568
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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" "+1.44.0" "test" "--frozen"`
[INFO] [stdout] 80e0da81b447de1196250ea736c9e626b161360753ebeda8694f23779c8630d6
[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" "80e0da81b447de1196250ea736c9e626b161360753ebeda8694f23779c8630d6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]    --> src/main.rs:166:5
[INFO] [stderr]     |
[INFO] [stderr] 166 | use std::thread;
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f1`
[INFO] [stderr]    --> src/main.rs:200:9
[INFO] [stderr]     |
[INFO] [stderr] 200 |     let f1 = learn_song().await;
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_f1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f2`
[INFO] [stderr]    --> src/main.rs:201:9
[INFO] [stderr]     |
[INFO] [stderr] 201 |     let f2 = sing_song().await;
[INFO] [stderr]     |         ^^ help: if this is intentional, prefix it with an underscore: `_f2`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/async_1-3468bec39e00f83d
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "80e0da81b447de1196250ea736c9e626b161360753ebeda8694f23779c8630d6"`
[INFO] running `"docker" "rm" "-f" "80e0da81b447de1196250ea736c9e626b161360753ebeda8694f23779c8630d6"`
[INFO] [stdout] 80e0da81b447de1196250ea736c9e626b161360753ebeda8694f23779c8630d6