[INFO] crate stund_protocol 0.1.4 is already in cache
[INFO] extracting crate stund_protocol 0.1.4 into work/ex/beta-1.37-6/sources/1.36.0/reg/stund_protocol/0.1.4
[INFO] extracting crate stund_protocol 0.1.4 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/stund_protocol/0.1.4
[INFO] validating manifest of stund_protocol-0.1.4 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_protocol-0.1.4 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_protocol-0.1.4
[INFO] finished frobbing stund_protocol-0.1.4
[INFO] frobbed toml for stund_protocol-0.1.4 written to work/ex/beta-1.37-6/sources/1.36.0/reg/stund_protocol/0.1.4/Cargo.toml
[INFO] started frobbing stund_protocol-0.1.4
[INFO] finished frobbing stund_protocol-0.1.4
[INFO] frobbed toml for stund_protocol-0.1.4 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/stund_protocol/0.1.4/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] 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing stund_protocol-0.1.4 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-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/stund_protocol/0.1.4:/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] 7bc58dcac6019c6f95f8a5016dd3c00d8cc5503612e3f68f971f427825dfe300
[INFO] running `"docker" "start" "-a" "7bc58dcac6019c6f95f8a5016dd3c00d8cc5503612e3f68f971f427825dfe300"`
[INFO] [stderr]    Compiling rent_to_own v0.1.0
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling tokio-serde v0.3.0
[INFO] [stderr]    Compiling tokio-serde-bincode v0.2.1
[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 state_machine_future v0.1.8
[INFO] [stderr]    Compiling stund_protocol v0.1.4 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/client.rs:327:25
[INFO] [stderr]     |
[INFO] [stderr] 327 |                     let mut state = state.take();
[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]     Finished dev [unoptimized + debuginfo] target(s) in 21.19s
[INFO] running `"docker" "inspect" "7bc58dcac6019c6f95f8a5016dd3c00d8cc5503612e3f68f971f427825dfe300"`
[INFO] running `"docker" "rm" "-f" "7bc58dcac6019c6f95f8a5016dd3c00d8cc5503612e3f68f971f427825dfe300"`
[INFO] [stdout] 7bc58dcac6019c6f95f8a5016dd3c00d8cc5503612e3f68f971f427825dfe300
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/stund_protocol/0.1.4:/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] 3bcc3d371ce85ff96762b631545a985b8e06278419ec618d3d377ed024fe6ce0
[INFO] running `"docker" "start" "-a" "3bcc3d371ce85ff96762b631545a985b8e06278419ec618d3d377ed024fe6ce0"`
[INFO] [stderr]    Compiling stund_protocol v0.1.4 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/client.rs:327:25
[INFO] [stderr]     |
[INFO] [stderr] 327 |                     let mut state = state.take();
[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]     Finished dev [unoptimized + debuginfo] target(s) in 2.19s
[INFO] running `"docker" "inspect" "3bcc3d371ce85ff96762b631545a985b8e06278419ec618d3d377ed024fe6ce0"`
[INFO] running `"docker" "rm" "-f" "3bcc3d371ce85ff96762b631545a985b8e06278419ec618d3d377ed024fe6ce0"`
[INFO] [stdout] 3bcc3d371ce85ff96762b631545a985b8e06278419ec618d3d377ed024fe6ce0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/stund_protocol/0.1.4:/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] e6789f2d75de0d30c7032231bf61af9097ee98718c5db25049622ccc7af89b1b
[INFO] running `"docker" "start" "-a" "e6789f2d75de0d30c7032231bf61af9097ee98718c5db25049622ccc7af89b1b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/stund_protocol-3d2d03ee867dcf9f
[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] [stderr]    Doc-tests stund_protocol
[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" "e6789f2d75de0d30c7032231bf61af9097ee98718c5db25049622ccc7af89b1b"`
[INFO] running `"docker" "rm" "-f" "e6789f2d75de0d30c7032231bf61af9097ee98718c5db25049622ccc7af89b1b"`
[INFO] [stdout] e6789f2d75de0d30c7032231bf61af9097ee98718c5db25049622ccc7af89b1b