[INFO] cloning repository peterdelevoryas/io-state-machine-prototype4
[INFO] running `"git" "clone" "--bare" "git://github.com/peterdelevoryas/io-state-machine-prototype4.git" "work/cache/sources/gh/peterdelevoryas/io-state-machine-prototype4"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/peterdelevoryas/io-state-machine-prototype4'...
[INFO] running `"git" "clone" "work/cache/sources/gh/peterdelevoryas/io-state-machine-prototype4" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/peterdelevoryas/io-state-machine-prototype4"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/peterdelevoryas/io-state-machine-prototype4'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/peterdelevoryas/io-state-machine-prototype4" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/peterdelevoryas/io-state-machine-prototype4"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/peterdelevoryas/io-state-machine-prototype4'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 59a8fe24ee6aff714d9dfac6abb54d62b80735f4
[INFO] sha for GitHub repo peterdelevoryas/io-state-machine-prototype4: 59a8fe24ee6aff714d9dfac6abb54d62b80735f4
[INFO] validating manifest of peterdelevoryas/io-state-machine-prototype4 on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of peterdelevoryas/io-state-machine-prototype4 on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing peterdelevoryas/io-state-machine-prototype4
[INFO] finished frobbing peterdelevoryas/io-state-machine-prototype4
[INFO] frobbed toml for peterdelevoryas/io-state-machine-prototype4 written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/peterdelevoryas/io-state-machine-prototype4/Cargo.toml
[INFO] started frobbing peterdelevoryas/io-state-machine-prototype4
[INFO] finished frobbing peterdelevoryas/io-state-machine-prototype4
[INFO] frobbed toml for peterdelevoryas/io-state-machine-prototype4 written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/peterdelevoryas/io-state-machine-prototype4/Cargo.toml
[INFO] crate peterdelevoryas/io-state-machine-prototype4 has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking peterdelevoryas/io-state-machine-prototype4 against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-3/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/peterdelevoryas/io-state-machine-prototype4:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b520d285ba1e2b34cf9d127d0a506d7ec1ca6c7b4ae8766be55a84bb19fd1f13
[INFO] running `"docker" "start" "-a" "b520d285ba1e2b34cf9d127d0a506d7ec1ca6c7b4ae8766be55a84bb19fd1f13"`
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking nix v0.7.0
[INFO] [stderr]     Checking mio v0.6.2
[INFO] [stderr]     Checking io-state-machine-prototype4 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/main.rs:187:5
[INFO] [stderr]     |
[INFO] [stderr] 187 |     return Ok(())
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:140:47
[INFO] [stderr]     |
[INFO] [stderr] 140 |                 Task::Conn { conn_slab_index: i } => {
[INFO] [stderr]     |                                               ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]    --> src/main.rs:148:34
[INFO] [stderr]     |
[INFO] [stderr] 148 |                 TaskStatus::Done(result) => {
[INFO] [stderr]     |                                  ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:167:47
[INFO] [stderr]     |
[INFO] [stderr] 167 |                 Task::Conn { conn_slab_index: i } => {
[INFO] [stderr]     |                                               ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]    --> src/main.rs:175:34
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 TaskStatus::Done(result) => {
[INFO] [stderr]     |                                  ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ready`
[INFO] [stderr]   --> src/main.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 |            ready: mio::Ready,
[INFO] [stderr]    |            ^^^^^ help: consider prefixing with an underscore: `_ready`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/main.rs:187:5
[INFO] [stderr]     |
[INFO] [stderr] 187 |     return Ok(())
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:140:47
[INFO] [stderr]     |
[INFO] [stderr] 140 |                 Task::Conn { conn_slab_index: i } => {
[INFO] [stderr]     |                                               ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]    --> src/main.rs:148:34
[INFO] [stderr]     |
[INFO] [stderr] 148 |                 TaskStatus::Done(result) => {
[INFO] [stderr]     |                                  ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:167:47
[INFO] [stderr]     |
[INFO] [stderr] 167 |                 Task::Conn { conn_slab_index: i } => {
[INFO] [stderr]     |                                               ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]    --> src/main.rs:175:34
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 TaskStatus::Done(result) => {
[INFO] [stderr]     |                                  ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ready`
[INFO] [stderr]   --> src/main.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 23 |            ready: mio::Ready,
[INFO] [stderr]    |            ^^^^^ help: consider prefixing with an underscore: `_ready`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `KineticRequest`
[INFO] [stderr]    --> src/main.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     KineticRequest,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `KineticRequest`
[INFO] [stderr]    --> src/main.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     KineticRequest,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.15s
[INFO] running `"docker" "inspect" "b520d285ba1e2b34cf9d127d0a506d7ec1ca6c7b4ae8766be55a84bb19fd1f13"`
[INFO] running `"docker" "rm" "-f" "b520d285ba1e2b34cf9d127d0a506d7ec1ca6c7b4ae8766be55a84bb19fd1f13"`
[INFO] [stdout] b520d285ba1e2b34cf9d127d0a506d7ec1ca6c7b4ae8766be55a84bb19fd1f13