[INFO] cloning repository https://github.com/knknkn1162/rust_server_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/knknkn1162/rust_server_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknknkn1162%2Frust_server_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknknkn1162%2Frust_server_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 08eb0ad0f81838ed253bb2870c88af01c51a104d
[INFO] testing knknkn1162/rust_server_test against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknknkn1162%2Frust_server_test" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/knknkn1162/rust_server_test 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/knknkn1162/rust_server_test
[INFO] finished tweaking git repo https://github.com/knknkn1162/rust_server_test
[INFO] tweaked toml for git repo https://github.com/knknkn1162/rust_server_test written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/knknkn1162/rust_server_test 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]  Downloading crates ...
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.2.0
[INFO] [stderr]   Downloaded fuchsia-zircon v0.2.1
[INFO] [stderr]   Downloaded utf8-ranges v1.0.0
[INFO] [stderr]   Downloaded memchr v1.0.2
[INFO] [stderr]   Downloaded thread_local v0.3.4
[INFO] [stderr]   Downloaded env_logger v0.4.3
[INFO] [stderr]   Downloaded unreachable v1.0.0
[INFO] [stderr]   Downloaded aho-corasick v0.6.3
[INFO] [stderr]   Downloaded regex-syntax v0.4.1
[INFO] [stderr]   Downloaded take v0.1.0
[INFO] [stderr]   Downloaded iovec v0.1.1
[INFO] [stderr]   Downloaded bytes v0.4.5
[INFO] [stderr]   Downloaded tokio-io v0.1.4
[INFO] [stderr]   Downloaded regex v0.2.2
[INFO] [stderr]   Downloaded byteorder v1.1.0
[INFO] [stderr]   Downloaded tokio-core v0.1.10
[INFO] [stderr]   Downloaded rand v0.3.18
[INFO] [stderr]   Downloaded bitflags v0.7.0
[INFO] [stderr]   Downloaded mio v0.6.11
[INFO] [stderr]   Downloaded lazycell v0.5.1
[INFO] [stderr]   Downloaded net2 v0.2.31
[INFO] [stderr]   Downloaded slab v0.3.0
[INFO] [stderr]   Downloaded cfg-if v0.1.2
[INFO] [stderr]   Downloaded libc v0.2.33
[INFO] [stderr]   Downloaded tokio-proto v0.1.1
[INFO] [stderr]   Downloaded futures v0.1.17
[INFO] [stderr]   Downloaded log v0.3.8
[INFO] [stderr]   Downloaded smallvec v0.2.1
[INFO] [stderr]   Downloaded scoped-tls v0.1.0
[INFO] [stderr]   Downloaded miow v0.2.1
[INFO] [stderr]   Downloaded tokio-service v0.1.0
[INFO] [stderr]   Downloaded slab v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 3a3e842ec3a640d9a9780b3d5afb9fb6942872c6861526b1389621cb48bb3342
[INFO] running `Command { std: "docker" "start" "-a" "3a3e842ec3a640d9a9780b3d5afb9fb6942872c6861526b1389621cb48bb3342", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a3e842ec3a640d9a9780b3d5afb9fb6942872c6861526b1389621cb48bb3342", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a3e842ec3a640d9a9780b3d5afb9fb6942872c6861526b1389621cb48bb3342", kill_on_drop: false }`
[INFO] [stdout] 3a3e842ec3a640d9a9780b3d5afb9fb6942872c6861526b1389621cb48bb3342
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] adbdcc06cfbf0db56a620da25d9de9fbc8343fefa8d047ca0f84b11f803db8cb
[INFO] running `Command { std: "docker" "start" "-a" "adbdcc06cfbf0db56a620da25d9de9fbc8343fefa8d047ca0f84b11f803db8cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling futures v0.1.17
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling lazycell v0.5.1
[INFO] [stderr]    Compiling scoped-tls v0.1.0
[INFO] [stderr]    Compiling take v0.1.0
[INFO] [stderr]    Compiling smallvec v0.2.1
[INFO] [stderr]    Compiling iovec v0.1.1
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling bytes v0.4.5
[INFO] [stderr]    Compiling mio v0.6.11
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling tokio-io v0.1.4
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling tokio-core v0.1.10
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling simple_line v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Future`
[INFO] [stdout]   --> src/main.rs:16:23
[INFO] [stdout]    |
[INFO] [stdout] 16 | use futures::{future, Future};
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 |     let mut server = TcpServer::new(Http, addr);
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.49s
[INFO] running `Command { std: "docker" "inspect" "adbdcc06cfbf0db56a620da25d9de9fbc8343fefa8d047ca0f84b11f803db8cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adbdcc06cfbf0db56a620da25d9de9fbc8343fefa8d047ca0f84b11f803db8cb", kill_on_drop: false }`
[INFO] [stdout] adbdcc06cfbf0db56a620da25d9de9fbc8343fefa8d047ca0f84b11f803db8cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] dfe6221b3a83cff1a5780232a7a317c19a022f15d3f7c6ad59e1290f147dfc49
[INFO] running `Command { std: "docker" "start" "-a" "dfe6221b3a83cff1a5780232a7a317c19a022f15d3f7c6ad59e1290f147dfc49", 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]    Compiling simple_line v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Future`
[INFO] [stdout]   --> src/main.rs:16:23
[INFO] [stdout]    |
[INFO] [stdout] 16 | use futures::{future, Future};
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 |     let mut server = TcpServer::new(Http, addr);
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "dfe6221b3a83cff1a5780232a7a317c19a022f15d3f7c6ad59e1290f147dfc49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfe6221b3a83cff1a5780232a7a317c19a022f15d3f7c6ad59e1290f147dfc49", kill_on_drop: false }`
[INFO] [stdout] dfe6221b3a83cff1a5780232a7a317c19a022f15d3f7c6ad59e1290f147dfc49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] f91bcfe1e651451906bd32395638335f947616d4fe04c4e9527c7735ad41a31e
[INFO] running `Command { std: "docker" "start" "-a" "f91bcfe1e651451906bd32395638335f947616d4fe04c4e9527c7735ad41a31e", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Future`
[INFO] [stderr]   --> src/main.rs:16:23
[INFO] [stderr]    |
[INFO] [stderr] 16 | use futures::{future, Future};
[INFO] [stderr]    |                       ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:151:9
[INFO] [stderr]     |
[INFO] [stderr] 151 |     let mut server = TcpServer::new(Http, addr);
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `simple_line` (bin "simple_line" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/simple_line-075fb2bdc25e3dad)
[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" "f91bcfe1e651451906bd32395638335f947616d4fe04c4e9527c7735ad41a31e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f91bcfe1e651451906bd32395638335f947616d4fe04c4e9527c7735ad41a31e", kill_on_drop: false }`
[INFO] [stdout] f91bcfe1e651451906bd32395638335f947616d4fe04c4e9527c7735ad41a31e