[INFO] updating cached repository lucarlig/quiz_game
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lucarlig/quiz_game
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lucarlig/quiz_game" "work/ex/beta-1.37-6/sources/1.36.0/gh/lucarlig/quiz_game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/lucarlig/quiz_game'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lucarlig/quiz_game" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lucarlig/quiz_game"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lucarlig/quiz_game'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bb0309cafb2ed242521173b52d913f3165447057
[INFO] sha for GitHub repo lucarlig/quiz_game: bb0309cafb2ed242521173b52d913f3165447057
[INFO] validating manifest of lucarlig/quiz_game 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 lucarlig/quiz_game 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 lucarlig/quiz_game
[INFO] finished frobbing lucarlig/quiz_game
[INFO] frobbed toml for lucarlig/quiz_game written to work/ex/beta-1.37-6/sources/1.36.0/gh/lucarlig/quiz_game/Cargo.toml
[INFO] started frobbing lucarlig/quiz_game
[INFO] finished frobbing lucarlig/quiz_game
[INFO] frobbed toml for lucarlig/quiz_game written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lucarlig/quiz_game/Cargo.toml
[INFO] crate lucarlig/quiz_game 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] [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" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing lucarlig/quiz_game 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/lucarlig/quiz_game:/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] b117989da4f6c08284026402912362fd36b028073f693a634a1a93e7940797a3
[INFO] running `"docker" "start" "-a" "b117989da4f6c08284026402912362fd36b028073f693a634a1a93e7940797a3"`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling csv v1.0.5
[INFO] [stderr]    Compiling quiz_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/main.rs:9:44
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn get_first_arg() -> Result<OsString, Box<Error>> {
[INFO] [stderr]   |                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:17:42
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn read_csv() -> Result<Vec<String>, Box<Error>> {
[INFO] [stderr]    |                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.34s
[INFO] running `"docker" "inspect" "b117989da4f6c08284026402912362fd36b028073f693a634a1a93e7940797a3"`
[INFO] running `"docker" "rm" "-f" "b117989da4f6c08284026402912362fd36b028073f693a634a1a93e7940797a3"`
[INFO] [stdout] b117989da4f6c08284026402912362fd36b028073f693a634a1a93e7940797a3
[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/lucarlig/quiz_game:/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] 57a9a82b5c494902fc8c501af30fdaec521da8f8fabf7fee02e3c2981bf78afe
[INFO] running `"docker" "start" "-a" "57a9a82b5c494902fc8c501af30fdaec521da8f8fabf7fee02e3c2981bf78afe"`
[INFO] [stderr]    Compiling quiz_game v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/main.rs:9:44
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn get_first_arg() -> Result<OsString, Box<Error>> {
[INFO] [stderr]   |                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:17:42
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn read_csv() -> Result<Vec<String>, Box<Error>> {
[INFO] [stderr]    |                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `"docker" "inspect" "57a9a82b5c494902fc8c501af30fdaec521da8f8fabf7fee02e3c2981bf78afe"`
[INFO] running `"docker" "rm" "-f" "57a9a82b5c494902fc8c501af30fdaec521da8f8fabf7fee02e3c2981bf78afe"`
[INFO] [stdout] 57a9a82b5c494902fc8c501af30fdaec521da8f8fabf7fee02e3c2981bf78afe
[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/lucarlig/quiz_game:/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] 33bcc09ff44d2f5e9dbc0d1c60154d320e9ae203246151c95cd91a7edbdfdc87
[INFO] running `"docker" "start" "-a" "33bcc09ff44d2f5e9dbc0d1c60154d320e9ae203246151c95cd91a7edbdfdc87"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/quiz_game-bb7c908339e824e0
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "33bcc09ff44d2f5e9dbc0d1c60154d320e9ae203246151c95cd91a7edbdfdc87"`
[INFO] running `"docker" "rm" "-f" "33bcc09ff44d2f5e9dbc0d1c60154d320e9ae203246151c95cd91a7edbdfdc87"`
[INFO] [stdout] 33bcc09ff44d2f5e9dbc0d1c60154d320e9ae203246151c95cd91a7edbdfdc87