[INFO] updating cached repository bvtsang/random_curiosity_encoder
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bvtsang/random_curiosity_encoder
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bvtsang/random_curiosity_encoder" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/bvtsang/random_curiosity_encoder"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/bvtsang/random_curiosity_encoder'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bvtsang/random_curiosity_encoder" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/bvtsang/random_curiosity_encoder"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/bvtsang/random_curiosity_encoder'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] aa20fbd45be0620a8ad12428f33aa240c8037929
[INFO] sha for GitHub repo bvtsang/random_curiosity_encoder: aa20fbd45be0620a8ad12428f33aa240c8037929
[INFO] validating manifest of bvtsang/random_curiosity_encoder on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of bvtsang/random_curiosity_encoder on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing bvtsang/random_curiosity_encoder
[INFO] finished frobbing bvtsang/random_curiosity_encoder
[INFO] frobbed toml for bvtsang/random_curiosity_encoder written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/bvtsang/random_curiosity_encoder/Cargo.toml
[INFO] started frobbing bvtsang/random_curiosity_encoder
[INFO] finished frobbing bvtsang/random_curiosity_encoder
[INFO] frobbed toml for bvtsang/random_curiosity_encoder written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/bvtsang/random_curiosity_encoder/Cargo.toml
[INFO] crate bvtsang/random_curiosity_encoder has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing bvtsang/random_curiosity_encoder against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/bvtsang/random_curiosity_encoder:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 96322fbd72daa796ef69dea2591475363febfa524fea292cc1e9241abe69e501
[INFO] running `"docker" "start" "-a" "96322fbd72daa796ef69dea2591475363febfa524fea292cc1e9241abe69e501"`
[INFO] [stderr]    Compiling cairo-rs v0.1.1
[INFO] [stderr]    Compiling gio v0.1.1
[INFO] [stderr]    Compiling gdk-pixbuf v0.1.1
[INFO] [stderr]    Compiling gdk v0.5.1
[INFO] [stderr]    Compiling gtk v0.1.1
[INFO] [stderr]    Compiling gio-sys v0.3.2
[INFO] [stderr]    Compiling cairo-sys-rs v0.3.2
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.3.2
[INFO] [stderr]    Compiling pango-sys v0.3.2
[INFO] [stderr]    Compiling gdk-sys v0.3.2
[INFO] [stderr]    Compiling gtk-sys v0.3.2
[INFO] [stderr]    Compiling glib-sys v0.3.2
[INFO] [stderr]    Compiling gobject-sys v0.3.2
[INFO] [stderr]    Compiling glib v0.1.1
[INFO] [stderr]    Compiling atk-sys v0.3.2
[INFO] [stderr]    Compiling pango v0.1.1
[INFO] [stderr]    Compiling random_curiosity_encoder v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:157:17
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 std::fs::remove_file(file);
[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 55.55s
[INFO] running `"docker" "inspect" "96322fbd72daa796ef69dea2591475363febfa524fea292cc1e9241abe69e501"`
[INFO] running `"docker" "rm" "-f" "96322fbd72daa796ef69dea2591475363febfa524fea292cc1e9241abe69e501"`
[INFO] [stdout] 96322fbd72daa796ef69dea2591475363febfa524fea292cc1e9241abe69e501
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/bvtsang/random_curiosity_encoder:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] d78b0d775f5e0e6fed5c4e647eb5553fa0432e23cbf4005cda9efb5a634f0294
[INFO] running `"docker" "start" "-a" "d78b0d775f5e0e6fed5c4e647eb5553fa0432e23cbf4005cda9efb5a634f0294"`
[INFO] [stderr]    Compiling random_curiosity_encoder v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:157:17
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 std::fs::remove_file(file);
[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 1.22s
[INFO] running `"docker" "inspect" "d78b0d775f5e0e6fed5c4e647eb5553fa0432e23cbf4005cda9efb5a634f0294"`
[INFO] running `"docker" "rm" "-f" "d78b0d775f5e0e6fed5c4e647eb5553fa0432e23cbf4005cda9efb5a634f0294"`
[INFO] [stdout] d78b0d775f5e0e6fed5c4e647eb5553fa0432e23cbf4005cda9efb5a634f0294
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/bvtsang/random_curiosity_encoder:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] 873d680df64f92c222fa69b102112a91e1054ebd9a236e2fa7627debd0d46dfb
[INFO] running `"docker" "start" "-a" "873d680df64f92c222fa69b102112a91e1054ebd9a236e2fa7627debd0d46dfb"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/random_curiosity_encoder-e8a93a533b437ffd
[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" "873d680df64f92c222fa69b102112a91e1054ebd9a236e2fa7627debd0d46dfb"`
[INFO] running `"docker" "rm" "-f" "873d680df64f92c222fa69b102112a91e1054ebd9a236e2fa7627debd0d46dfb"`
[INFO] [stdout] 873d680df64f92c222fa69b102112a91e1054ebd9a236e2fa7627debd0d46dfb