[INFO] cloning repository https://github.com/dctk/chatserver_rust_sample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dctk/chatserver_rust_sample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdctk%2Fchatserver_rust_sample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdctk%2Fchatserver_rust_sample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 882e907a97202e88ef876cd38e7d9ac0389bcdae
[INFO] testing dctk/chatserver_rust_sample against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdctk%2Fchatserver_rust_sample" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dctk/chatserver_rust_sample on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 /workspace/builds/worker-6/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31f45ed4110a79ab154b7a9d6c785fd6d1709dbfcc91ce0898e38674002f1ffc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "31f45ed4110a79ab154b7a9d6c785fd6d1709dbfcc91ce0898e38674002f1ffc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31f45ed4110a79ab154b7a9d6c785fd6d1709dbfcc91ce0898e38674002f1ffc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31f45ed4110a79ab154b7a9d6c785fd6d1709dbfcc91ce0898e38674002f1ffc", kill_on_drop: false }`
[INFO] [stdout] 31f45ed4110a79ab154b7a9d6c785fd6d1709dbfcc91ce0898e38674002f1ffc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c999b822f5ff58ed6be6544332298723c40c14d4b8757eb4c977ace4295ad6d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3c999b822f5ff58ed6be6544332298723c40c14d4b8757eb4c977ace4295ad6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling chatserver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `message_len` is never read
[INFO] [stdout]    --> src/main.rs:138:41
[INFO] [stdout]     |
[INFO] [stdout] 138 | ...                   let mut message_len: usize = 0;
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.32s
[INFO] running `Command { std: "docker" "inspect" "3c999b822f5ff58ed6be6544332298723c40c14d4b8757eb4c977ace4295ad6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c999b822f5ff58ed6be6544332298723c40c14d4b8757eb4c977ace4295ad6d", kill_on_drop: false }`
[INFO] [stdout] 3c999b822f5ff58ed6be6544332298723c40c14d4b8757eb4c977ace4295ad6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0dd5c7e57101e26232897ea047c76c70bc07a7f87e0ee3941d8af1d74b1a3249
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0dd5c7e57101e26232897ea047c76c70bc07a7f87e0ee3941d8af1d74b1a3249", kill_on_drop: false }`
[INFO] [stderr]    Compiling chatserver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `message_len` is never read
[INFO] [stdout]    --> src/main.rs:138:41
[INFO] [stdout]     |
[INFO] [stdout] 138 | ...                   let mut message_len: usize = 0;
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "0dd5c7e57101e26232897ea047c76c70bc07a7f87e0ee3941d8af1d74b1a3249", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dd5c7e57101e26232897ea047c76c70bc07a7f87e0ee3941d8af1d74b1a3249", kill_on_drop: false }`
[INFO] [stdout] 0dd5c7e57101e26232897ea047c76c70bc07a7f87e0ee3941d8af1d74b1a3249
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] af2c206725653f63ae54104fd419d9b87b494ff1ce9c1d9593f4462e0a2b67d4
[INFO] running `Command { std: "docker" "start" "-a" "af2c206725653f63ae54104fd419d9b87b494ff1ce9c1d9593f4462e0a2b67d4", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `message_len` is never read
[INFO] [stderr]    --> src/main.rs:138:41
[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] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chatserver-b3e2722202b8f71e
[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 `Command { std: "docker" "inspect" "af2c206725653f63ae54104fd419d9b87b494ff1ce9c1d9593f4462e0a2b67d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af2c206725653f63ae54104fd419d9b87b494ff1ce9c1d9593f4462e0a2b67d4", kill_on_drop: false }`
[INFO] [stdout] af2c206725653f63ae54104fd419d9b87b494ff1ce9c1d9593f4462e0a2b67d4