[INFO] updating cached repository https://github.com/dctk/chatserver_rust_sample
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] 882e907a97202e88ef876cd38e7d9ac0389bcdae
[INFO] testing dctk/chatserver_rust_sample against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdctk%2Fchatserver_rust_sample" "work/builds/worker-1/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dctk/chatserver_rust_sample on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dctk/chatserver_rust_sample
[INFO] finished tweaking git repo https://github.com/dctk/chatserver_rust_sample
[INFO] tweaked toml for git repo https://github.com/dctk/chatserver_rust_sample written to work/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/dctk/chatserver_rust_sample already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 6a600f78621ec57c27034d7a0f12ac41144d2c4aa3dda193992559a7f342ebaa
[INFO] running `"docker" "start" "-a" "6a600f78621ec57c27034d7a0f12ac41144d2c4aa3dda193992559a7f342ebaa"`
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling chatserver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: value assigned to `message_len` is never read
[INFO] [stderr]    --> src/main.rs:138:45
[INFO] [stderr]     |
[INFO] [stderr] 138 |                                     let mut message_len: usize = 0;
[INFO] [stderr]     |                                             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.99s
[INFO] running `"docker" "inspect" "6a600f78621ec57c27034d7a0f12ac41144d2c4aa3dda193992559a7f342ebaa"`
[INFO] running `"docker" "rm" "-f" "6a600f78621ec57c27034d7a0f12ac41144d2c4aa3dda193992559a7f342ebaa"`
[INFO] [stdout] 6a600f78621ec57c27034d7a0f12ac41144d2c4aa3dda193992559a7f342ebaa
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] f3bd6f21523df91dce188cf364bdc422ab776e440a87faf1b3e1fd00252235f5
[INFO] running `"docker" "start" "-a" "f3bd6f21523df91dce188cf364bdc422ab776e440a87faf1b3e1fd00252235f5"`
[INFO] [stderr]    Compiling chatserver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: value assigned to `message_len` is never read
[INFO] [stderr]    --> src/main.rs:138:45
[INFO] [stderr]     |
[INFO] [stderr] 138 |                                     let mut message_len: usize = 0;
[INFO] [stderr]     |                                             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "f3bd6f21523df91dce188cf364bdc422ab776e440a87faf1b3e1fd00252235f5"`
[INFO] running `"docker" "rm" "-f" "f3bd6f21523df91dce188cf364bdc422ab776e440a87faf1b3e1fd00252235f5"`
[INFO] [stdout] f3bd6f21523df91dce188cf364bdc422ab776e440a87faf1b3e1fd00252235f5
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 90ff132b2f97fbdaf3477d8a64afd48b464f1e0ee01c35ab0cbf1a148b425d2c
[INFO] running `"docker" "start" "-a" "90ff132b2f97fbdaf3477d8a64afd48b464f1e0ee01c35ab0cbf1a148b425d2c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chatserver-c90d2621e04b3b02
[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" "90ff132b2f97fbdaf3477d8a64afd48b464f1e0ee01c35ab0cbf1a148b425d2c"`
[INFO] running `"docker" "rm" "-f" "90ff132b2f97fbdaf3477d8a64afd48b464f1e0ee01c35ab0cbf1a148b425d2c"`
[INFO] [stdout] 90ff132b2f97fbdaf3477d8a64afd48b464f1e0ee01c35ab0cbf1a148b425d2c