[INFO] crate IMAPServer 0.0.0 is already in cache
[INFO] extracting crate IMAPServer 0.0.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/IMAPServer/0.0.0
[INFO] extracting crate IMAPServer 0.0.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/IMAPServer/0.0.0
[INFO] validating manifest of IMAPServer-0.0.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of IMAPServer-0.0.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing IMAPServer-0.0.0
[INFO] finished frobbing IMAPServer-0.0.0
[INFO] frobbed toml for IMAPServer-0.0.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/IMAPServer/0.0.0/Cargo.toml
[INFO] started frobbing IMAPServer-0.0.0
[INFO] finished frobbing IMAPServer-0.0.0
[INFO] frobbed toml for IMAPServer-0.0.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/IMAPServer/0.0.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing IMAPServer-0.0.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/IMAPServer/0.0.0:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] c706c67e5efe4d0eed982501c0de1ed71d6dee3b7198474701bc6eecb046d940
[INFO] running `"docker" "start" "-a" "c706c67e5efe4d0eed982501c0de1ed71d6dee3b7198474701bc6eecb046d940"`
[INFO] [stderr]    Compiling config v0.4.1
[INFO] [stderr]    Compiling IMAPServer v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: crate `IMAPServer` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `imapserver`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     helper::get_config().set_default("RFC", "3501");
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `"docker" "inspect" "c706c67e5efe4d0eed982501c0de1ed71d6dee3b7198474701bc6eecb046d940"`
[INFO] running `"docker" "rm" "-f" "c706c67e5efe4d0eed982501c0de1ed71d6dee3b7198474701bc6eecb046d940"`
[INFO] [stdout] c706c67e5efe4d0eed982501c0de1ed71d6dee3b7198474701bc6eecb046d940
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/IMAPServer/0.0.0:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] c6094a2d3a928b05e6264db119d8dc72ef1de0881dc5e545bc194def5e7e769e
[INFO] running `"docker" "start" "-a" "c6094a2d3a928b05e6264db119d8dc72ef1de0881dc5e545bc194def5e7e769e"`
[INFO] [stderr]    Compiling IMAPServer v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: crate `IMAPServer` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `imapserver`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     helper::get_config().set_default("RFC", "3501");
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `"docker" "inspect" "c6094a2d3a928b05e6264db119d8dc72ef1de0881dc5e545bc194def5e7e769e"`
[INFO] running `"docker" "rm" "-f" "c6094a2d3a928b05e6264db119d8dc72ef1de0881dc5e545bc194def5e7e769e"`
[INFO] [stdout] c6094a2d3a928b05e6264db119d8dc72ef1de0881dc5e545bc194def5e7e769e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/IMAPServer/0.0.0:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] d2eabc227c94e0d6765066eb4d1f31a475f8fb456698e3d1b9b494ad6339d0aa
[INFO] running `"docker" "start" "-a" "d2eabc227c94e0d6765066eb4d1f31a475f8fb456698e3d1b9b494ad6339d0aa"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/IMAPServer-49835ca7e373e1be
[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" "d2eabc227c94e0d6765066eb4d1f31a475f8fb456698e3d1b9b494ad6339d0aa"`
[INFO] running `"docker" "rm" "-f" "d2eabc227c94e0d6765066eb4d1f31a475f8fb456698e3d1b9b494ad6339d0aa"`
[INFO] [stdout] d2eabc227c94e0d6765066eb4d1f31a475f8fb456698e3d1b9b494ad6339d0aa