[INFO] updating cached repository Wardormeur/calendar
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Wardormeur/calendar
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Wardormeur/calendar" "work/ex/beta-1.37-6/sources/1.36.0/gh/Wardormeur/calendar"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Wardormeur/calendar'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Wardormeur/calendar" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Wardormeur/calendar"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Wardormeur/calendar'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5c1fe9b40f3204ed995027cfc2a6963c5ce59a47
[INFO] sha for GitHub repo Wardormeur/calendar: 5c1fe9b40f3204ed995027cfc2a6963c5ce59a47
[INFO] validating manifest of Wardormeur/calendar 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 Wardormeur/calendar 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 Wardormeur/calendar
[INFO] finished frobbing Wardormeur/calendar
[INFO] frobbed toml for Wardormeur/calendar written to work/ex/beta-1.37-6/sources/1.36.0/gh/Wardormeur/calendar/Cargo.toml
[INFO] started frobbing Wardormeur/calendar
[INFO] finished frobbing Wardormeur/calendar
[INFO] frobbed toml for Wardormeur/calendar written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Wardormeur/calendar/Cargo.toml
[INFO] crate Wardormeur/calendar already has a lockfile, it will not be regenerated
[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 Wardormeur/calendar against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Wardormeur/calendar:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] eda45ca2c38d25d4df2b682767104c4d0ff4b9c2613a54648c48fecefc7d6897
[INFO] running `"docker" "start" "-a" "eda45ca2c38d25d4df2b682767104c4d0ff4b9c2613a54648c48fecefc7d6897"`
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling vobject v0.6.0 (https://github.com/untitaker/rust-vobject.git#f100677f)
[INFO] [stderr]    Compiling ical v0.4.0
[INFO] [stderr]    Compiling calendar v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     buf.read_to_string(&mut file_content); 
[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 8.28s
[INFO] running `"docker" "inspect" "eda45ca2c38d25d4df2b682767104c4d0ff4b9c2613a54648c48fecefc7d6897"`
[INFO] running `"docker" "rm" "-f" "eda45ca2c38d25d4df2b682767104c4d0ff4b9c2613a54648c48fecefc7d6897"`
[INFO] [stdout] eda45ca2c38d25d4df2b682767104c4d0ff4b9c2613a54648c48fecefc7d6897
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Wardormeur/calendar:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7354343666ec75b95e5e6a1fda1959c477c33015e8eb55f09ba7f4efd4cea780
[INFO] running `"docker" "start" "-a" "7354343666ec75b95e5e6a1fda1959c477c33015e8eb55f09ba7f4efd4cea780"`
[INFO] [stderr]    Compiling calendar v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     buf.read_to_string(&mut file_content); 
[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 0.95s
[INFO] running `"docker" "inspect" "7354343666ec75b95e5e6a1fda1959c477c33015e8eb55f09ba7f4efd4cea780"`
[INFO] running `"docker" "rm" "-f" "7354343666ec75b95e5e6a1fda1959c477c33015e8eb55f09ba7f4efd4cea780"`
[INFO] [stdout] 7354343666ec75b95e5e6a1fda1959c477c33015e8eb55f09ba7f4efd4cea780
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Wardormeur/calendar:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 189c1572b52a9f02a88d0a0bedc47f607f53cce8213835cde32449219d60c158
[INFO] running `"docker" "start" "-a" "189c1572b52a9f02a88d0a0bedc47f607f53cce8213835cde32449219d60c158"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/calendar-d12c6938084d62c8
[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" "189c1572b52a9f02a88d0a0bedc47f607f53cce8213835cde32449219d60c158"`
[INFO] running `"docker" "rm" "-f" "189c1572b52a9f02a88d0a0bedc47f607f53cce8213835cde32449219d60c158"`
[INFO] [stdout] 189c1572b52a9f02a88d0a0bedc47f607f53cce8213835cde32449219d60c158