[INFO] cloning repository mike706574/rust-json-file-deserialization-example
[INFO] running `"git" "clone" "--bare" "git://github.com/mike706574/rust-json-file-deserialization-example.git" "work/cache/sources/gh/mike706574/rust-json-file-deserialization-example"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/mike706574/rust-json-file-deserialization-example'...
[INFO] running `"git" "clone" "work/cache/sources/gh/mike706574/rust-json-file-deserialization-example" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/mike706574/rust-json-file-deserialization-example"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/mike706574/rust-json-file-deserialization-example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mike706574/rust-json-file-deserialization-example" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/mike706574/rust-json-file-deserialization-example"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/mike706574/rust-json-file-deserialization-example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f08a1321a61340d0398afa26434423e395575c11
[INFO] sha for GitHub repo mike706574/rust-json-file-deserialization-example: f08a1321a61340d0398afa26434423e395575c11
[INFO] validating manifest of mike706574/rust-json-file-deserialization-example on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mike706574/rust-json-file-deserialization-example on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mike706574/rust-json-file-deserialization-example
[INFO] finished frobbing mike706574/rust-json-file-deserialization-example
[INFO] frobbed toml for mike706574/rust-json-file-deserialization-example written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/mike706574/rust-json-file-deserialization-example/Cargo.toml
[INFO] started frobbing mike706574/rust-json-file-deserialization-example
[INFO] finished frobbing mike706574/rust-json-file-deserialization-example
[INFO] frobbed toml for mike706574/rust-json-file-deserialization-example written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/mike706574/rust-json-file-deserialization-example/Cargo.toml
[INFO] crate mike706574/rust-json-file-deserialization-example already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mike706574/rust-json-file-deserialization-example against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/mike706574/rust-json-file-deserialization-example:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 79ed79c486bb6e1d6e7ab4f8eb626a4ed4ef5a798f9262694e63181bfe93234b
[INFO] running `"docker" "start" "-a" "79ed79c486bb6e1d6e7ab4f8eb626a4ed4ef5a798f9262694e63181bfe93234b"`
[INFO] [stderr]    Compiling serde_json v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.10
[INFO] [stderr]    Compiling foo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     example();
[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 6.74s
[INFO] running `"docker" "inspect" "79ed79c486bb6e1d6e7ab4f8eb626a4ed4ef5a798f9262694e63181bfe93234b"`
[INFO] running `"docker" "rm" "-f" "79ed79c486bb6e1d6e7ab4f8eb626a4ed4ef5a798f9262694e63181bfe93234b"`
[INFO] [stdout] 79ed79c486bb6e1d6e7ab4f8eb626a4ed4ef5a798f9262694e63181bfe93234b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/mike706574/rust-json-file-deserialization-example:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0f9a8fc94f607a8dc7295d3d4a3f7da5516cce0b03aa9b66144bb52a9839287b
[INFO] running `"docker" "start" "-a" "0f9a8fc94f607a8dc7295d3d4a3f7da5516cce0b03aa9b66144bb52a9839287b"`
[INFO] [stderr]    Compiling foo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     example();
[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 0.69s
[INFO] running `"docker" "inspect" "0f9a8fc94f607a8dc7295d3d4a3f7da5516cce0b03aa9b66144bb52a9839287b"`
[INFO] running `"docker" "rm" "-f" "0f9a8fc94f607a8dc7295d3d4a3f7da5516cce0b03aa9b66144bb52a9839287b"`
[INFO] [stdout] 0f9a8fc94f607a8dc7295d3d4a3f7da5516cce0b03aa9b66144bb52a9839287b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/mike706574/rust-json-file-deserialization-example:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"`
[INFO] [stdout] db1705ff193e84e8564f1d862ad3fc75db1602115f3bfb2aea840ea5b5ba6de9
[INFO] running `"docker" "start" "-a" "db1705ff193e84e8564f1d862ad3fc75db1602115f3bfb2aea840ea5b5ba6de9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/foo-5a54ae2b312dc201
[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" "db1705ff193e84e8564f1d862ad3fc75db1602115f3bfb2aea840ea5b5ba6de9"`
[INFO] running `"docker" "rm" "-f" "db1705ff193e84e8564f1d862ad3fc75db1602115f3bfb2aea840ea5b5ba6de9"`
[INFO] [stdout] db1705ff193e84e8564f1d862ad3fc75db1602115f3bfb2aea840ea5b5ba6de9