[INFO] updating cached repository https://github.com/ben0x539/twif
[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] 87c35f915ea49fd97c8b4cf9b55ba5a8c61bd9b0
[INFO] checking ben0x539/twif against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fben0x539%2Ftwif" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ben0x539/twif on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ben0x539/twif
[INFO] finished tweaking git repo https://github.com/ben0x539/twif
[INFO] tweaked toml for git repo https://github.com/ben0x539/twif written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ben0x539/twif already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "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" "+ba72b15666b2491415aec703a02c2364fe5e2790" "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] d0b675007bf847920f39389d71b76ef8b043350f8528443f55080a98c6c5050c
[INFO] running `"docker" "start" "-a" "d0b675007bf847920f39389d71b76ef8b043350f8528443f55080a98c6c5050c"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling eyre v0.3.0
[INFO] [stderr]     Checking indenter v0.1.1
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking openssl-sys v0.9.54
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking openssl v0.10.28
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking native-tls v0.2.3
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling tokio-macros v0.2.4
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling tracing-attributes v0.1.7
[INFO] [stderr]    Compiling trackable_derive v0.1.3
[INFO] [stderr]    Compiling paw-attributes v1.0.2
[INFO] [stderr]    Compiling spandoc v0.1.2
[INFO] [stderr]     Checking paw v1.0.0
[INFO] [stderr]     Checking trackable v0.2.23
[INFO] [stderr]     Checking tokio v0.2.11
[INFO] [stderr]     Checking hls_m3u8 v0.2.1
[INFO] [stderr]     Checking tracing v0.1.13
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking tracing-futures v0.2.3
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking tokio-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.2.1
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking hyper v0.13.2
[INFO] [stderr]     Checking hyper-tls v0.4.1
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking tracing-serde v0.1.0
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking tracing-subscriber v0.2.1
[INFO] [stderr]     Checking reqwest v0.10.3
[INFO] [stderr]     Checking tracing-error v0.1.1
[INFO] [stderr]     Checking twif v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/main.rs:160:9
[INFO] [stderr]     |
[INFO] [stderr] 140 | /         loop {
[INFO] [stderr] 141 | |             let n = child_output.read(&mut buf).await?;
[INFO] [stderr] 142 | |             if n <= 0 {
[INFO] [stderr] 143 | |                 continue;
[INFO] [stderr] ...   |
[INFO] [stderr] 158 | |             }
[INFO] [stderr] 159 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] 160 |           Ok::<_, eyre::ErrReport>(())
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/main.rs:160:9
[INFO] [stderr]     |
[INFO] [stderr] 140 | /         loop {
[INFO] [stderr] 141 | |             let n = child_output.read(&mut buf).await?;
[INFO] [stderr] 142 | |             if n <= 0 {
[INFO] [stderr] 143 | |                 continue;
[INFO] [stderr] ...   |
[INFO] [stderr] 158 | |             }
[INFO] [stderr] 159 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] 160 |           Ok::<_, eyre::ErrReport>(())
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 54s
[INFO] running `"docker" "inspect" "d0b675007bf847920f39389d71b76ef8b043350f8528443f55080a98c6c5050c"`
[INFO] running `"docker" "rm" "-f" "d0b675007bf847920f39389d71b76ef8b043350f8528443f55080a98c6c5050c"`
[INFO] [stdout] d0b675007bf847920f39389d71b76ef8b043350f8528443f55080a98c6c5050c