[INFO] cloning repository https://github.com/justinrlle/zrglng
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/justinrlle/zrglng" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinrlle%2Fzrglng"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinrlle%2Fzrglng'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9b75f53d11954f5234edf1dc4994075cea2a4ff3
[INFO] checking justinrlle/zrglng against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinrlle%2Fzrglng" "/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/justinrlle/zrglng on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/justinrlle/zrglng
[INFO] finished tweaking git repo https://github.com/justinrlle/zrglng
[INFO] tweaked toml for git repo https://github.com/justinrlle/zrglng written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/justinrlle/zrglng already has a lockfile, it will not be regenerated
[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-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" "+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] 82903ff61fade713089170459e897ccece832e49c1cb4ed6477c7a75ffd4af1e
[INFO] running `"docker" "start" "-a" "82903ff61fade713089170459e897ccece832e49c1cb4ed6477c7a75ffd4af1e"`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling curl v0.4.23
[INFO] [stderr]    Compiling isahc v0.7.3
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.2
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]    Compiling curl-sys v0.4.21
[INFO] [stderr]     Checking async-task v1.0.0
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking sluice v0.4.2
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking futures-timer v0.4.0
[INFO] [stderr]     Checking async-std v0.99.5
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.1
[INFO] [stderr]     Checking structopt v0.3.1
[INFO] [stderr]     Checking zrglng v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: irrefutable while-let pattern
[INFO] [stderr]    --> src/main.rs:91:9
[INFO] [stderr]     |
[INFO] [stderr] 91  | /         while let n_read = body.read(&mut buf).await.map_err(|e| err_of!(e, "failed to read from body at byte {}", count))? {
[INFO] [stderr] 92  | |             if n_read == 0 {
[INFO] [stderr] 93  | |                 break
[INFO] [stderr] 94  | |             }
[INFO] [stderr] ...   |
[INFO] [stderr] 99  | |             file.write_all(out_buf).await.map_err(|e| err_of!(e, "failed to write to file at byte {}", count))?;
[INFO] [stderr] 100 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable while-let pattern
[INFO] [stderr]    --> src/main.rs:91:9
[INFO] [stderr]     |
[INFO] [stderr] 91  | /         while let n_read = body.read(&mut buf).await.map_err(|e| err_of!(e, "failed to read from body at byte {}", count))? {
[INFO] [stderr] 92  | |             if n_read == 0 {
[INFO] [stderr] 93  | |                 break
[INFO] [stderr] 94  | |             }
[INFO] [stderr] ...   |
[INFO] [stderr] 99  | |             file.write_all(out_buf).await.map_err(|e| err_of!(e, "failed to write to file at byte {}", count))?;
[INFO] [stderr] 100 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.41s
[INFO] running `"docker" "inspect" "82903ff61fade713089170459e897ccece832e49c1cb4ed6477c7a75ffd4af1e"`
[INFO] running `"docker" "rm" "-f" "82903ff61fade713089170459e897ccece832e49c1cb4ed6477c7a75ffd4af1e"`
[INFO] [stdout] 82903ff61fade713089170459e897ccece832e49c1cb4ed6477c7a75ffd4af1e