[INFO] updating cached repository https://github.com/dbeck/tcp-echo-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] bb4c07335482d0063fba3f0cc7d41d32a46f510b
[INFO] testing dbeck/tcp-echo-rs against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdbeck%2Ftcp-echo-rs" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dbeck/tcp-echo-rs on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dbeck/tcp-echo-rs
[INFO] finished tweaking git repo https://github.com/dbeck/tcp-echo-rs
[INFO] tweaked toml for git repo https://github.com/dbeck/tcp-echo-rs written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/dbeck/tcp-echo-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-9/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] af04dce0874d5955ed7096201046461cf5c5093a8bab1dddd934471aff1ebf0a
[INFO] running `"docker" "start" "-a" "af04dce0874d5955ed7096201046461cf5c5093a8bab1dddd934471aff1ebf0a"`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling lossyq v0.1.19
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling acto-rs v0.4.0
[INFO] [stderr]    Compiling mio v0.6.21
[INFO] [stderr]    Compiling tcp-echo v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `channel_id`
[INFO] [stderr]   --> src/handle_parsed.rs:12:51
[INFO] [stderr]    |
[INFO] [stderr] 12 |     if let &mut ChannelWrapper::ConnectedReceiver(ref mut channel_id,
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.54s
[INFO] running `"docker" "inspect" "af04dce0874d5955ed7096201046461cf5c5093a8bab1dddd934471aff1ebf0a"`
[INFO] running `"docker" "rm" "-f" "af04dce0874d5955ed7096201046461cf5c5093a8bab1dddd934471aff1ebf0a"`
[INFO] [stdout] af04dce0874d5955ed7096201046461cf5c5093a8bab1dddd934471aff1ebf0a
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"`
[INFO] [stdout] 31eca693d4a2cdc5577220f8e388816f8b7ac893d50c6942e7005a52de2f79fe
[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" "31eca693d4a2cdc5577220f8e388816f8b7ac893d50c6942e7005a52de2f79fe"`
[INFO] [stderr]    Compiling tcp-echo v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `channel_id`
[INFO] [stderr]   --> src/handle_parsed.rs:12:51
[INFO] [stderr]    |
[INFO] [stderr] 12 |     if let &mut ChannelWrapper::ConnectedReceiver(ref mut channel_id,
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "31eca693d4a2cdc5577220f8e388816f8b7ac893d50c6942e7005a52de2f79fe"`
[INFO] running `"docker" "rm" "-f" "31eca693d4a2cdc5577220f8e388816f8b7ac893d50c6942e7005a52de2f79fe"`
[INFO] [stdout] 31eca693d4a2cdc5577220f8e388816f8b7ac893d50c6942e7005a52de2f79fe
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 304e4e41f1e7533ed25bc6331ae2202e63bfce9f6946c3afb1f39b453d5e7374
[INFO] running `"docker" "start" "-a" "304e4e41f1e7533ed25bc6331ae2202e63bfce9f6946c3afb1f39b453d5e7374"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused variable: `channel_id`
[INFO] [stderr]   --> src/handle_parsed.rs:12:51
[INFO] [stderr]    |
[INFO] [stderr] 12 |     if let &mut ChannelWrapper::ConnectedReceiver(ref mut channel_id,
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel_id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tcp_echo-9c51ed425c370445
[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" "304e4e41f1e7533ed25bc6331ae2202e63bfce9f6946c3afb1f39b453d5e7374"`
[INFO] running `"docker" "rm" "-f" "304e4e41f1e7533ed25bc6331ae2202e63bfce9f6946c3afb1f39b453d5e7374"`
[INFO] [stdout] 304e4e41f1e7533ed25bc6331ae2202e63bfce9f6946c3afb1f39b453d5e7374