[INFO] updating cached repository romatthe/TinyDB
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/romatthe/TinyDB
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/romatthe/TinyDB" "work/ex/beta-1.38-1/sources/1.37.0/gh/romatthe/TinyDB"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/romatthe/TinyDB'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/romatthe/TinyDB" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/romatthe/TinyDB"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/romatthe/TinyDB'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 204e73e64eb0ea174d06e8010b0f8cf8197d7e3e
[INFO] sha for GitHub repo romatthe/TinyDB: 204e73e64eb0ea174d06e8010b0f8cf8197d7e3e
[INFO] validating manifest of romatthe/TinyDB 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 romatthe/TinyDB 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 romatthe/TinyDB
[INFO] finished frobbing romatthe/TinyDB
[INFO] frobbed toml for romatthe/TinyDB written to work/ex/beta-1.38-1/sources/1.37.0/gh/romatthe/TinyDB/Cargo.toml
[INFO] started frobbing romatthe/TinyDB
[INFO] finished frobbing romatthe/TinyDB
[INFO] frobbed toml for romatthe/TinyDB written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/romatthe/TinyDB/Cargo.toml
[INFO] crate romatthe/TinyDB already has a lockfile, it will not be regenerated
[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 romatthe/TinyDB 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/romatthe/TinyDB:/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] 691e91ef8e15216ed7fd250ee8957b3f2905eb0258aa04bc063a3d431e1c9408
[INFO] running `"docker" "start" "-a" "691e91ef8e15216ed7fd250ee8957b3f2905eb0258aa04bc063a3d431e1c9408"`
[INFO] [stderr]    Compiling cc v1.0.9
[INFO] [stderr]    Compiling serde v1.0.34
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]    Compiling termcolor v0.3.5
[INFO] [stderr]    Compiling libz-sys v1.0.18
[INFO] [stderr]    Compiling cmake v0.1.29
[INFO] [stderr]    Compiling libgit2-sys v0.6.19
[INFO] [stderr]    Compiling env_logger v0.5.6
[INFO] [stderr]    Compiling toml v0.4.5
[INFO] [stderr]    Compiling git2 v0.6.11
[INFO] [stderr]    Compiling built v0.2.3
[INFO] [stderr]    Compiling tinydb v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     run_repl();
[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 56.77s
[INFO] running `"docker" "inspect" "691e91ef8e15216ed7fd250ee8957b3f2905eb0258aa04bc063a3d431e1c9408"`
[INFO] running `"docker" "rm" "-f" "691e91ef8e15216ed7fd250ee8957b3f2905eb0258aa04bc063a3d431e1c9408"`
[INFO] [stdout] 691e91ef8e15216ed7fd250ee8957b3f2905eb0258aa04bc063a3d431e1c9408
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/romatthe/TinyDB:/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] b883ef1a23981a59d98228f1e9edc8980ab3377e9b21b28ab6d6b9fe05c7c60d
[INFO] running `"docker" "start" "-a" "b883ef1a23981a59d98228f1e9edc8980ab3377e9b21b28ab6d6b9fe05c7c60d"`
[INFO] [stderr]    Compiling tinydb v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     run_repl();
[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 0.81s
[INFO] running `"docker" "inspect" "b883ef1a23981a59d98228f1e9edc8980ab3377e9b21b28ab6d6b9fe05c7c60d"`
[INFO] running `"docker" "rm" "-f" "b883ef1a23981a59d98228f1e9edc8980ab3377e9b21b28ab6d6b9fe05c7c60d"`
[INFO] [stdout] b883ef1a23981a59d98228f1e9edc8980ab3377e9b21b28ab6d6b9fe05c7c60d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/romatthe/TinyDB:/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] 6d21b5e162489a0babe9893ffd6c93b9e9aadfbbd1a11b3b174a6c66d724e433
[INFO] running `"docker" "start" "-a" "6d21b5e162489a0babe9893ffd6c93b9e9aadfbbd1a11b3b174a6c66d724e433"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tinydb-1bfa4578b8c5bc9b
[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" "6d21b5e162489a0babe9893ffd6c93b9e9aadfbbd1a11b3b174a6c66d724e433"`
[INFO] running `"docker" "rm" "-f" "6d21b5e162489a0babe9893ffd6c93b9e9aadfbbd1a11b3b174a6c66d724e433"`
[INFO] [stdout] 6d21b5e162489a0babe9893ffd6c93b9e9aadfbbd1a11b3b174a6c66d724e433