[INFO] cloning repository wezm/serde-duplicate-field
[INFO] running `"git" "clone" "--bare" "git://github.com/wezm/serde-duplicate-field.git" "work/cache/sources/gh/wezm/serde-duplicate-field"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/wezm/serde-duplicate-field'...
[INFO] running `"git" "clone" "work/cache/sources/gh/wezm/serde-duplicate-field" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/wezm/serde-duplicate-field"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/wezm/serde-duplicate-field'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wezm/serde-duplicate-field" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/wezm/serde-duplicate-field"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/wezm/serde-duplicate-field'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6cd23ec38321f71c5dcecceb7c52c1daf82da5c1
[INFO] sha for GitHub repo wezm/serde-duplicate-field: 6cd23ec38321f71c5dcecceb7c52c1daf82da5c1
[INFO] validating manifest of wezm/serde-duplicate-field 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 wezm/serde-duplicate-field 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 wezm/serde-duplicate-field
[INFO] finished frobbing wezm/serde-duplicate-field
[INFO] frobbed toml for wezm/serde-duplicate-field written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/wezm/serde-duplicate-field/Cargo.toml
[INFO] started frobbing wezm/serde-duplicate-field
[INFO] finished frobbing wezm/serde-duplicate-field
[INFO] frobbed toml for wezm/serde-duplicate-field written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/wezm/serde-duplicate-field/Cargo.toml
[INFO] crate wezm/serde-duplicate-field 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] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] testing wezm/serde-duplicate-field against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/wezm/serde-duplicate-field:/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] c8c36d2b4187ff60396b04d2ccf0380213bd9ae86902d8ae88a6c1feb69c0d56
[INFO] running `"docker" "start" "-a" "c8c36d2b4187ff60396b04d2ccf0380213bd9ae86902d8ae88a6c1feb69c0d56"`
[INFO] [stderr]    Compiling serde v1.0.36
[INFO] [stderr]    Compiling itoa v0.4.1
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]    Compiling serde_derive_internals v0.22.2
[INFO] [stderr]    Compiling serde_derive v1.0.36
[INFO] [stderr]    Compiling serde_json v1.0.13
[INFO] [stderr]    Compiling serde-duplicate-field v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.95s
[INFO] running `"docker" "inspect" "c8c36d2b4187ff60396b04d2ccf0380213bd9ae86902d8ae88a6c1feb69c0d56"`
[INFO] running `"docker" "rm" "-f" "c8c36d2b4187ff60396b04d2ccf0380213bd9ae86902d8ae88a6c1feb69c0d56"`
[INFO] [stdout] c8c36d2b4187ff60396b04d2ccf0380213bd9ae86902d8ae88a6c1feb69c0d56
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/wezm/serde-duplicate-field:/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] 51f447fb501e2eefde4bbf5889415d7268718b4459da3fdd6960b1fa6eab6d47
[INFO] running `"docker" "start" "-a" "51f447fb501e2eefde4bbf5889415d7268718b4459da3fdd6960b1fa6eab6d47"`
[INFO] [stderr]    Compiling serde-duplicate-field v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.19s
[INFO] running `"docker" "inspect" "51f447fb501e2eefde4bbf5889415d7268718b4459da3fdd6960b1fa6eab6d47"`
[INFO] running `"docker" "rm" "-f" "51f447fb501e2eefde4bbf5889415d7268718b4459da3fdd6960b1fa6eab6d47"`
[INFO] [stdout] 51f447fb501e2eefde4bbf5889415d7268718b4459da3fdd6960b1fa6eab6d47
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/wezm/serde-duplicate-field:/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] 39a86a53170ec47f0f2297ba899b86f48f0133c3c2196bf6209197ab6a8942a9
[INFO] running `"docker" "start" "-a" "39a86a53170ec47f0f2297ba899b86f48f0133c3c2196bf6209197ab6a8942a9"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/serde_duplicate_field-590f4f0811643b2e
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "39a86a53170ec47f0f2297ba899b86f48f0133c3c2196bf6209197ab6a8942a9"`
[INFO] running `"docker" "rm" "-f" "39a86a53170ec47f0f2297ba899b86f48f0133c3c2196bf6209197ab6a8942a9"`
[INFO] [stdout] 39a86a53170ec47f0f2297ba899b86f48f0133c3c2196bf6209197ab6a8942a9