[INFO] crate silver 1.0.7 is already in cache
[INFO] extracting crate silver 1.0.7 into work/ex/beta-1.38-1/sources/1.37.0/reg/silver/1.0.7
[INFO] extracting crate silver 1.0.7 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/silver/1.0.7
[INFO] validating manifest of silver-1.0.7 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 silver-1.0.7 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 silver-1.0.7
[INFO] finished frobbing silver-1.0.7
[INFO] frobbed toml for silver-1.0.7 written to work/ex/beta-1.38-1/sources/1.37.0/reg/silver/1.0.7/Cargo.toml
[INFO] started frobbing silver-1.0.7
[INFO] finished frobbing silver-1.0.7
[INFO] frobbed toml for silver-1.0.7 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/silver/1.0.7/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 silver-1.0.7 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/reg/silver/1.0.7:/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] 869df2dac9b1df085b131569d4af530d5a4e1772346275e4d95eb9c1782bbdfd
[INFO] running `"docker" "start" "-a" "869df2dac9b1df085b131569d4af530d5a4e1772346275e4d95eb9c1782bbdfd"`
[INFO] [stderr]    Compiling git2 v0.8.0
[INFO] [stderr]    Compiling silver v1.0.7 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.61s
[INFO] running `"docker" "inspect" "869df2dac9b1df085b131569d4af530d5a4e1772346275e4d95eb9c1782bbdfd"`
[INFO] running `"docker" "rm" "-f" "869df2dac9b1df085b131569d4af530d5a4e1772346275e4d95eb9c1782bbdfd"`
[INFO] [stdout] 869df2dac9b1df085b131569d4af530d5a4e1772346275e4d95eb9c1782bbdfd
[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/reg/silver/1.0.7:/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] fb90f51ab3c64b372aae6ab118f9a63cc7d738b4b2b9f24c152ced35c3fa6c26
[INFO] running `"docker" "start" "-a" "fb90f51ab3c64b372aae6ab118f9a63cc7d738b4b2b9f24c152ced35c3fa6c26"`
[INFO] [stderr]    Compiling silver v1.0.7 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `"docker" "inspect" "fb90f51ab3c64b372aae6ab118f9a63cc7d738b4b2b9f24c152ced35c3fa6c26"`
[INFO] running `"docker" "rm" "-f" "fb90f51ab3c64b372aae6ab118f9a63cc7d738b4b2b9f24c152ced35c3fa6c26"`
[INFO] [stdout] fb90f51ab3c64b372aae6ab118f9a63cc7d738b4b2b9f24c152ced35c3fa6c26
[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/reg/silver/1.0.7:/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] 62081a294fb6aa4de2dd581d9b9b5158705d1cec59f4363ca90de2c1fb439e2a
[INFO] running `"docker" "start" "-a" "62081a294fb6aa4de2dd581d9b9b5158705d1cec59f4363ca90de2c1fb439e2a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/silver-18f72de5d57f8a23
[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" "62081a294fb6aa4de2dd581d9b9b5158705d1cec59f4363ca90de2c1fb439e2a"`
[INFO] running `"docker" "rm" "-f" "62081a294fb6aa4de2dd581d9b9b5158705d1cec59f4363ca90de2c1fb439e2a"`
[INFO] [stdout] 62081a294fb6aa4de2dd581d9b9b5158705d1cec59f4363ca90de2c1fb439e2a