[INFO] crate stund 0.1.6 is already in cache
[INFO] extracting crate stund 0.1.6 into work/ex/beta-1.37-6/sources/1.36.0/reg/stund/0.1.6
[INFO] extracting crate stund 0.1.6 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/stund/0.1.6
[INFO] validating manifest of stund-0.1.6 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of stund-0.1.6 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing stund-0.1.6
[INFO] finished frobbing stund-0.1.6
[INFO] frobbed toml for stund-0.1.6 written to work/ex/beta-1.37-6/sources/1.36.0/reg/stund/0.1.6/Cargo.toml
[INFO] started frobbing stund-0.1.6
[INFO] finished frobbing stund-0.1.6
[INFO] frobbed toml for stund-0.1.6 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/stund/0.1.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing stund-0.1.6 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/stund/0.1.6:/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 1a9816516847426f1d687e22c92d849341930eac702fb3482845b776e1dcb1d4
[INFO] running `"docker" "start" "-a" "1a9816516847426f1d687e22c92d849341930eac702fb3482845b776e1dcb1d4"`
[INFO] [stderr]    Compiling daemonize v0.4.1
[INFO] [stderr]    Compiling tokio-serde v0.3.0
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling tokio-signal v0.2.7
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling tokio-uds v0.1.7
[INFO] [stderr]    Compiling tokio-signal v0.1.5
[INFO] [stderr]    Compiling tokio-borrow-stdio v0.1.0
[INFO] [stderr]    Compiling tokio-serde-bincode v0.2.1
[INFO] [stderr]    Compiling tokio-pty-process v0.4.0
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]    Compiling darling v0.8.6
[INFO] [stderr]    Compiling derive_state_machine_future v0.1.8
[INFO] [stderr]    Compiling derive_state_machine_future v0.2.0
[INFO] [stderr]    Compiling state_machine_future v0.2.0
[INFO] [stderr]    Compiling state_machine_future v0.1.8
[INFO] [stderr]    Compiling stund_protocol v0.1.4
[INFO] [stderr]    Compiling stund v0.1.6 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:137:17
[INFO] [stderr]     |
[INFO] [stderr] 137 |             let mut buf = Vec::new();
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/daemon.rs:320:21
[INFO] [stderr]     |
[INFO] [stderr] 320 |                 let mut state = state.take();
[INFO] [stderr]     |                     ----^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/daemon.rs:591:25
[INFO] [stderr]     |
[INFO] [stderr] 591 |                     let mut state = state.take();
[INFO] [stderr]     |                         ----^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/daemon.rs:630:29
[INFO] [stderr]     |
[INFO] [stderr] 630 |                         let mut state = state.take();
[INFO] [stderr]     |                             ----^^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.94s
[INFO] running `"docker" "inspect" "1a9816516847426f1d687e22c92d849341930eac702fb3482845b776e1dcb1d4"`
[INFO] running `"docker" "rm" "-f" "1a9816516847426f1d687e22c92d849341930eac702fb3482845b776e1dcb1d4"`
[INFO] [stdout] 1a9816516847426f1d687e22c92d849341930eac702fb3482845b776e1dcb1d4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/stund/0.1.6:/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 72c18bd5a1aa54283ebefb3ad9a96d694b1378ae7b5a48c02d20feb2e9c7c827
[INFO] running `"docker" "start" "-a" "72c18bd5a1aa54283ebefb3ad9a96d694b1378ae7b5a48c02d20feb2e9c7c827"`
[INFO] [stderr]    Compiling stund v0.1.6 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:137:17
[INFO] [stderr]     |
[INFO] [stderr] 137 |             let mut buf = Vec::new();
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/daemon.rs:320:21
[INFO] [stderr]     |
[INFO] [stderr] 320 |                 let mut state = state.take();
[INFO] [stderr]     |                     ----^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/daemon.rs:591:25
[INFO] [stderr]     |
[INFO] [stderr] 591 |                     let mut state = state.take();
[INFO] [stderr]     |                         ----^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/daemon.rs:630:29
[INFO] [stderr]     |
[INFO] [stderr] 630 |                         let mut state = state.take();
[INFO] [stderr]     |                             ----^^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `"docker" "inspect" "72c18bd5a1aa54283ebefb3ad9a96d694b1378ae7b5a48c02d20feb2e9c7c827"`
[INFO] running `"docker" "rm" "-f" "72c18bd5a1aa54283ebefb3ad9a96d694b1378ae7b5a48c02d20feb2e9c7c827"`
[INFO] [stdout] 72c18bd5a1aa54283ebefb3ad9a96d694b1378ae7b5a48c02d20feb2e9c7c827
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/stund/0.1.6:/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=warn" "-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] ce2c825c6c14e9ad78fd167026941c3054ded687d8aac865a3e6f38e61b6170d
[INFO] running `"docker" "start" "-a" "ce2c825c6c14e9ad78fd167026941c3054ded687d8aac865a3e6f38e61b6170d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/stund-cf08db533bd83a80
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ce2c825c6c14e9ad78fd167026941c3054ded687d8aac865a3e6f38e61b6170d"`
[INFO] running `"docker" "rm" "-f" "ce2c825c6c14e9ad78fd167026941c3054ded687d8aac865a3e6f38e61b6170d"`
[INFO] [stdout] ce2c825c6c14e9ad78fd167026941c3054ded687d8aac865a3e6f38e61b6170d