[INFO] updating cached repository wezm/serde-duplicate-field
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wezm/serde-duplicate-field
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wezm/serde-duplicate-field" "work/ex/beta-1.38-1/sources/1.37.0/gh/wezm/serde-duplicate-field"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/wezm/serde-duplicate-field'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wezm/serde-duplicate-field" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wezm/serde-duplicate-field"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 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 wezm/serde-duplicate-field 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 wezm/serde-duplicate-field
[INFO] finished frobbing wezm/serde-duplicate-field
[INFO] frobbed toml for wezm/serde-duplicate-field written to work/ex/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/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" "+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 wezm/serde-duplicate-field 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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=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] d3cea05b6def977d74f0206b2efda1d4fd5bfaae9a17dfab79f20d4e7720e1b3
[INFO] running `"docker" "start" "-a" "d3cea05b6def977d74f0206b2efda1d4fd5bfaae9a17dfab79f20d4e7720e1b3"`
[INFO] [stderr]    Compiling serde v1.0.36
[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 32.62s
[INFO] running `"docker" "inspect" "d3cea05b6def977d74f0206b2efda1d4fd5bfaae9a17dfab79f20d4e7720e1b3"`
[INFO] running `"docker" "rm" "-f" "d3cea05b6def977d74f0206b2efda1d4fd5bfaae9a17dfab79f20d4e7720e1b3"`
[INFO] [stdout] d3cea05b6def977d74f0206b2efda1d4fd5bfaae9a17dfab79f20d4e7720e1b3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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=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] 55f5f32bddab86d63ecbafdd05cc0d9181dd6dcbbddf63f8c152cc3d69f2d94a
[INFO] running `"docker" "start" "-a" "55f5f32bddab86d63ecbafdd05cc0d9181dd6dcbbddf63f8c152cc3d69f2d94a"`
[INFO] [stderr]    Compiling serde-duplicate-field v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.34s
[INFO] running `"docker" "inspect" "55f5f32bddab86d63ecbafdd05cc0d9181dd6dcbbddf63f8c152cc3d69f2d94a"`
[INFO] running `"docker" "rm" "-f" "55f5f32bddab86d63ecbafdd05cc0d9181dd6dcbbddf63f8c152cc3d69f2d94a"`
[INFO] [stdout] 55f5f32bddab86d63ecbafdd05cc0d9181dd6dcbbddf63f8c152cc3d69f2d94a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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=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] 3bb8216bb38d314e0d7f768f8fb67dbfe8d6e0fabc142543a7e2c5c3a9e87e22
[INFO] running `"docker" "start" "-a" "3bb8216bb38d314e0d7f768f8fb67dbfe8d6e0fabc142543a7e2c5c3a9e87e22"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/serde_duplicate_field-7ac17abff61c67d3
[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" "3bb8216bb38d314e0d7f768f8fb67dbfe8d6e0fabc142543a7e2c5c3a9e87e22"`
[INFO] running `"docker" "rm" "-f" "3bb8216bb38d314e0d7f768f8fb67dbfe8d6e0fabc142543a7e2c5c3a9e87e22"`
[INFO] [stdout] 3bb8216bb38d314e0d7f768f8fb67dbfe8d6e0fabc142543a7e2c5c3a9e87e22