[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 beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] cc10e5bb2364338ea548fb754acdce078f054820da5d283455e17ca38ffad17a
[INFO] running `"docker" "start" "-a" "cc10e5bb2364338ea548fb754acdce078f054820da5d283455e17ca38ffad17a"`
[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 2.81s
[INFO] running `"docker" "inspect" "cc10e5bb2364338ea548fb754acdce078f054820da5d283455e17ca38ffad17a"`
[INFO] running `"docker" "rm" "-f" "cc10e5bb2364338ea548fb754acdce078f054820da5d283455e17ca38ffad17a"`
[INFO] [stdout] cc10e5bb2364338ea548fb754acdce078f054820da5d283455e17ca38ffad17a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 3248db084abebeb1e8c70c3a57ef0c6c818997f2ce5f49c1dadbc7879e8ed9e1
[INFO] running `"docker" "start" "-a" "3248db084abebeb1e8c70c3a57ef0c6c818997f2ce5f49c1dadbc7879e8ed9e1"`
[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" "3248db084abebeb1e8c70c3a57ef0c6c818997f2ce5f49c1dadbc7879e8ed9e1"`
[INFO] running `"docker" "rm" "-f" "3248db084abebeb1e8c70c3a57ef0c6c818997f2ce5f49c1dadbc7879e8ed9e1"`
[INFO] [stdout] 3248db084abebeb1e8c70c3a57ef0c6c818997f2ce5f49c1dadbc7879e8ed9e1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 386978bc86887c277c77b06bd809e84038be06d2643ff9afb11f62ac0448e532
[INFO] running `"docker" "start" "-a" "386978bc86887c277c77b06bd809e84038be06d2643ff9afb11f62ac0448e532"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/IMAPServer-5ebe66e8184f49c5
[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" "386978bc86887c277c77b06bd809e84038be06d2643ff9afb11f62ac0448e532"`
[INFO] running `"docker" "rm" "-f" "386978bc86887c277c77b06bd809e84038be06d2643ff9afb11f62ac0448e532"`
[INFO] [stdout] 386978bc86887c277c77b06bd809e84038be06d2643ff9afb11f62ac0448e532