[INFO] updating cached repository hwchen/melt
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hwchen/melt
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hwchen/melt" "work/ex/beta-1.38-1/sources/1.37.0/gh/hwchen/melt"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/hwchen/melt'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hwchen/melt" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hwchen/melt"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hwchen/melt'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 25c234d0cef2861db70f9d5473f73e745e7f1c45
[INFO] sha for GitHub repo hwchen/melt: 25c234d0cef2861db70f9d5473f73e745e7f1c45
[INFO] validating manifest of hwchen/melt 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 hwchen/melt 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 hwchen/melt
[INFO] finished frobbing hwchen/melt
[INFO] frobbed toml for hwchen/melt written to work/ex/beta-1.38-1/sources/1.37.0/gh/hwchen/melt/Cargo.toml
[INFO] started frobbing hwchen/melt
[INFO] finished frobbing hwchen/melt
[INFO] frobbed toml for hwchen/melt written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hwchen/melt/Cargo.toml
[INFO] crate hwchen/melt 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing hwchen/melt against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hwchen/melt:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 332691a94bed6a9c5318b154047295cc6db5d38d519f8f7a5bb88e8387701be9
[INFO] running `"docker" "start" "-a" "332691a94bed6a9c5318b154047295cc6db5d38d519f8f7a5bb88e8387701be9"`
[INFO] [stderr]    Compiling memchr v2.1.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling csv v1.0.5
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling structopt v0.2.14
[INFO] [stderr]    Compiling melt v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.95s
[INFO] running `"docker" "inspect" "332691a94bed6a9c5318b154047295cc6db5d38d519f8f7a5bb88e8387701be9"`
[INFO] running `"docker" "rm" "-f" "332691a94bed6a9c5318b154047295cc6db5d38d519f8f7a5bb88e8387701be9"`
[INFO] [stdout] 332691a94bed6a9c5318b154047295cc6db5d38d519f8f7a5bb88e8387701be9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hwchen/melt:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 432ecb6bf0b78488891b7105b68b91fbc28b5cd496795a8b67d3c80977bc423e
[INFO] running `"docker" "start" "-a" "432ecb6bf0b78488891b7105b68b91fbc28b5cd496795a8b67d3c80977bc423e"`
[INFO] [stderr]    Compiling melt v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "432ecb6bf0b78488891b7105b68b91fbc28b5cd496795a8b67d3c80977bc423e"`
[INFO] running `"docker" "rm" "-f" "432ecb6bf0b78488891b7105b68b91fbc28b5cd496795a8b67d3c80977bc423e"`
[INFO] [stdout] 432ecb6bf0b78488891b7105b68b91fbc28b5cd496795a8b67d3c80977bc423e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hwchen/melt:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 3665027f68246263eae17f34ccdbba594b89cf5d701dc623d93c78fa5b97a4fe
[INFO] running `"docker" "start" "-a" "3665027f68246263eae17f34ccdbba594b89cf5d701dc623d93c78fa5b97a4fe"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/melt-d122de6b374e43b0
[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" "3665027f68246263eae17f34ccdbba594b89cf5d701dc623d93c78fa5b97a4fe"`
[INFO] running `"docker" "rm" "-f" "3665027f68246263eae17f34ccdbba594b89cf5d701dc623d93c78fa5b97a4fe"`
[INFO] [stdout] 3665027f68246263eae17f34ccdbba594b89cf5d701dc623d93c78fa5b97a4fe