[INFO] cloning repository https://github.com/robn/twister
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/robn/twister" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobn%2Ftwister", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobn%2Ftwister'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3323bcd554bd2dbf24d7d67a05ec92733068260
[INFO] testing robn/twister against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobn%2Ftwister" "/workspace/builds/worker-36/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-36/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/robn/twister on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/robn/twister
[INFO] finished tweaking git repo https://github.com/robn/twister
[INFO] tweaked toml for git repo https://github.com/robn/twister written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] crate git repo https://github.com/robn/twister already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hecs v0.3.2
[INFO] [stderr]   Downloaded bimap v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 689929dad5ee8f4acdacfcfa2f7ffe957565c31be41b14457056df6cbebc95db
[INFO] running `Command { std: "docker" "start" "-a" "689929dad5ee8f4acdacfcfa2f7ffe957565c31be41b14457056df6cbebc95db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "689929dad5ee8f4acdacfcfa2f7ffe957565c31be41b14457056df6cbebc95db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "689929dad5ee8f4acdacfcfa2f7ffe957565c31be41b14457056df6cbebc95db", kill_on_drop: false }`
[INFO] [stdout] 689929dad5ee8f4acdacfcfa2f7ffe957565c31be41b14457056df6cbebc95db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f78b7b35a5789125bb8cd01f413b41d7185995931783a3d008319425d503796b
[INFO] running `Command { std: "docker" "start" "-a" "f78b7b35a5789125bb8cd01f413b41d7185995931783a3d008319425d503796b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling ahash v0.4.7
[INFO] [stderr]    Compiling bimap v0.6.0
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling hecs v0.3.2
[INFO] [stderr]    Compiling mio v0.7.9
[INFO] [stderr]    Compiling twister v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]    --> src/server.rs:123:35
[INFO] [stdout]     |
[INFO] [stdout] 123 |                   if let Some((_, entity)) = self.token_entity.remove_by_left(&token) {
[INFO] [stdout]     |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]   --> src/channel.rs:49:33
[INFO] [stdout]    |
[INFO] [stdout] 49 |                     .for_each(|(entity, io)| {
[INFO] [stdout]    |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/channel.rs:33:25
[INFO] [stdout]    |
[INFO] [stdout] 33 |     .for_each(|(entity, c)| {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.11s
[INFO] running `Command { std: "docker" "inspect" "f78b7b35a5789125bb8cd01f413b41d7185995931783a3d008319425d503796b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f78b7b35a5789125bb8cd01f413b41d7185995931783a3d008319425d503796b", kill_on_drop: false }`
[INFO] [stdout] f78b7b35a5789125bb8cd01f413b41d7185995931783a3d008319425d503796b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b14320cf6f21635f79f52701ca82538c0cc65d2078dc9098fdd887af4b8964b
[INFO] running `Command { std: "docker" "start" "-a" "2b14320cf6f21635f79f52701ca82538c0cc65d2078dc9098fdd887af4b8964b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling twister v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]    --> src/server.rs:123:35
[INFO] [stdout]     |
[INFO] [stdout] 123 |                   if let Some((_, entity)) = self.token_entity.remove_by_left(&token) {
[INFO] [stdout]     |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entity`
[INFO] [stdout]   --> src/channel.rs:49:33
[INFO] [stdout]    |
[INFO] [stdout] 49 |                     .for_each(|(entity, io)| {
[INFO] [stdout]    |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/channel.rs:33:25
[INFO] [stdout]    |
[INFO] [stdout] 33 |     .for_each(|(entity, c)| {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "2b14320cf6f21635f79f52701ca82538c0cc65d2078dc9098fdd887af4b8964b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b14320cf6f21635f79f52701ca82538c0cc65d2078dc9098fdd887af4b8964b", kill_on_drop: false }`
[INFO] [stdout] 2b14320cf6f21635f79f52701ca82538c0cc65d2078dc9098fdd887af4b8964b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 06ec29ea131600a436120689b75245a4e64328eb58fa8a1c42c62870d64406fd
[INFO] running `Command { std: "docker" "start" "-a" "06ec29ea131600a436120689b75245a4e64328eb58fa8a1c42c62870d64406fd", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `entity`
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/server.rs:123:35
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 123 |                   if let Some((_, entity)) = self.token_entity.remove_by_left(&token) {
[INFO] [stdout] 
[INFO] [stderr]     |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `entity`
[INFO] [stderr]   --> src/channel.rs:49:33
[INFO] [stderr]    |
[INFO] [stderr] 49 |                     .for_each(|(entity, io)| {
[INFO] [stderr]    |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/channel.rs:33:25
[INFO] [stderr]    |
[INFO] [stderr] 33 |     .for_each(|(entity, c)| {
[INFO] [stderr]    |                         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: `twister` (bin "twister" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/twister-84767b7b54805ca3)
[INFO] running `Command { std: "docker" "inspect" "06ec29ea131600a436120689b75245a4e64328eb58fa8a1c42c62870d64406fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06ec29ea131600a436120689b75245a4e64328eb58fa8a1c42c62870d64406fd", kill_on_drop: false }`
[INFO] [stdout] 06ec29ea131600a436120689b75245a4e64328eb58fa8a1c42c62870d64406fd