[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 try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdctk%2Fchatserver_rust_sample" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dctk/chatserver_rust_sample on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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-2/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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-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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7fa5e6e9671783eb1c03a725917965c48b07b26a316547afa59465f3740be49f
[INFO] running `Command { std: "docker" "start" "-a" "7fa5e6e9671783eb1c03a725917965c48b07b26a316547afa59465f3740be49f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fa5e6e9671783eb1c03a725917965c48b07b26a316547afa59465f3740be49f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fa5e6e9671783eb1c03a725917965c48b07b26a316547afa59465f3740be49f", kill_on_drop: false }`
[INFO] [stdout] 7fa5e6e9671783eb1c03a725917965c48b07b26a316547afa59465f3740be49f
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fcab19253ba6b8c0e11972dd8d4c3ed80181408d715528eb01a938dcca6e90d
[INFO] running `Command { std: "docker" "start" "-a" "7fcab19253ba6b8c0e11972dd8d4c3ed80181408d715528eb01a938dcca6e90d", 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 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:138:45
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.34s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7fcab19253ba6b8c0e11972dd8d4c3ed80181408d715528eb01a938dcca6e90d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fcab19253ba6b8c0e11972dd8d4c3ed80181408d715528eb01a938dcca6e90d", kill_on_drop: false }`
[INFO] [stdout] 7fcab19253ba6b8c0e11972dd8d4c3ed80181408d715528eb01a938dcca6e90d
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7afcd3e7068d427974e03eb8db0a6a6791db677c333f8a34cee4f3e15741f26
[INFO] running `Command { std: "docker" "start" "-a" "d7afcd3e7068d427974e03eb8db0a6a6791db677c333f8a34cee4f3e15741f26", 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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d7afcd3e7068d427974e03eb8db0a6a6791db677c333f8a34cee4f3e15741f26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7afcd3e7068d427974e03eb8db0a6a6791db677c333f8a34cee4f3e15741f26", kill_on_drop: false }`
[INFO] [stdout] d7afcd3e7068d427974e03eb8db0a6a6791db677c333f8a34cee4f3e15741f26
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 51b9e6be871c96e150b63fefc58f485cd8e92416a141a9cabdb8ff5b85482a36
[INFO] running `Command { std: "docker" "start" "-a" "51b9e6be871c96e150b63fefc58f485cd8e92416a141a9cabdb8ff5b85482a36", kill_on_drop: false }`
[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 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chatserver-529d1dd5a4e8b51d)
[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" "51b9e6be871c96e150b63fefc58f485cd8e92416a141a9cabdb8ff5b85482a36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51b9e6be871c96e150b63fefc58f485cd8e92416a141a9cabdb8ff5b85482a36", kill_on_drop: false }`
[INFO] [stdout] 51b9e6be871c96e150b63fefc58f485cd8e92416a141a9cabdb8ff5b85482a36