[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 beta-2022-04-10 for beta-1.61-1
[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 beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fcadd434a584d9ca5224b4d0bb76bd2554838ebfc79df3da7d7a277b449d16d
[INFO] running `Command { std: "docker" "start" "-a" "0fcadd434a584d9ca5224b4d0bb76bd2554838ebfc79df3da7d7a277b449d16d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fcadd434a584d9ca5224b4d0bb76bd2554838ebfc79df3da7d7a277b449d16d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fcadd434a584d9ca5224b4d0bb76bd2554838ebfc79df3da7d7a277b449d16d", kill_on_drop: false }`
[INFO] [stdout] 0fcadd434a584d9ca5224b4d0bb76bd2554838ebfc79df3da7d7a277b449d16d
[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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db589350be28ee9629ed839a85e0a96f8f225b88667e04f2d5c8c89299249255
[INFO] running `Command { std: "docker" "start" "-a" "db589350be28ee9629ed839a85e0a96f8f225b88667e04f2d5c8c89299249255", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling iovec v0.1.2
[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:138:45
[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 2.88s
[INFO] running `Command { std: "docker" "inspect" "db589350be28ee9629ed839a85e0a96f8f225b88667e04f2d5c8c89299249255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db589350be28ee9629ed839a85e0a96f8f225b88667e04f2d5c8c89299249255", kill_on_drop: false }`
[INFO] [stdout] db589350be28ee9629ed839a85e0a96f8f225b88667e04f2d5c8c89299249255
[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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6122c73902e5740628c2d93a08a6ce28e63cf9a373a418a473d06f8a3657c97b
[INFO] running `Command { std: "docker" "start" "-a" "6122c73902e5740628c2d93a08a6ce28e63cf9a373a418a473d06f8a3657c97b", 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:138:45
[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 0.32s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/chatserver-5727ff394be44c5c)
[INFO] running `Command { std: "docker" "inspect" "6122c73902e5740628c2d93a08a6ce28e63cf9a373a418a473d06f8a3657c97b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6122c73902e5740628c2d93a08a6ce28e63cf9a373a418a473d06f8a3657c97b", kill_on_drop: false }`
[INFO] [stdout] 6122c73902e5740628c2d93a08a6ce28e63cf9a373a418a473d06f8a3657c97b
[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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f4bf34565d774d3746fdf28daba0620702f31456afd789e625a606e07442e294
[INFO] running `Command { std: "docker" "start" "-a" "f4bf34565d774d3746fdf28daba0620702f31456afd789e625a606e07442e294", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] warning: `chatserver` (bin "chatserver" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chatserver-5727ff394be44c5c)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f4bf34565d774d3746fdf28daba0620702f31456afd789e625a606e07442e294", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4bf34565d774d3746fdf28daba0620702f31456afd789e625a606e07442e294", kill_on_drop: false }`
[INFO] [stdout] f4bf34565d774d3746fdf28daba0620702f31456afd789e625a606e07442e294