[INFO] updating cached repository MakeWorkSimple/learn_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/MakeWorkSimple/learn_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/MakeWorkSimple/learn_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/MakeWorkSimple/learn_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/MakeWorkSimple/learn_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/MakeWorkSimple/learn_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/MakeWorkSimple/learn_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/MakeWorkSimple/learn_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 560701a362c5660107f4ff56ed99725d84a0c6e1
[INFO] sha for GitHub repo MakeWorkSimple/learn_rust: 560701a362c5660107f4ff56ed99725d84a0c6e1
[INFO] validating manifest of MakeWorkSimple/learn_rust 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 MakeWorkSimple/learn_rust 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 MakeWorkSimple/learn_rust
[INFO] finished frobbing MakeWorkSimple/learn_rust
[INFO] frobbed toml for MakeWorkSimple/learn_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/MakeWorkSimple/learn_rust/Cargo.toml
[INFO] started frobbing MakeWorkSimple/learn_rust
[INFO] finished frobbing MakeWorkSimple/learn_rust
[INFO] frobbed toml for MakeWorkSimple/learn_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/MakeWorkSimple/learn_rust/Cargo.toml
[INFO] crate MakeWorkSimple/learn_rust 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 MakeWorkSimple/learn_rust 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-1/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/MakeWorkSimple/learn_rust:/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] 0a23b457cfb8741cb5afe83cedcbc4788e3c3db95652588cd38fc6db69ba9b02
[INFO] running `"docker" "start" "-a" "0a23b457cfb8741cb5afe83cedcbc4788e3c3db95652588cd38fc6db69ba9b02"`
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling h2 v0.1.13
[INFO] [stderr]    Compiling tokio-threadpool v0.1.8
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling tokio-reactor v0.1.6
[INFO] [stderr]    Compiling pretty_env_logger v0.2.5
[INFO] [stderr]    Compiling tokio-udp v0.1.2
[INFO] [stderr]    Compiling tokio-tcp v0.1.2
[INFO] [stderr]    Compiling tokio-uds v0.2.3
[INFO] [stderr]    Compiling tokio-fs v0.1.4
[INFO] [stderr]    Compiling tokio v0.1.11
[INFO] [stderr]    Compiling hyper v0.12.13
[INFO] [stderr]    Compiling spider v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.45s
[INFO] running `"docker" "inspect" "0a23b457cfb8741cb5afe83cedcbc4788e3c3db95652588cd38fc6db69ba9b02"`
[INFO] running `"docker" "rm" "-f" "0a23b457cfb8741cb5afe83cedcbc4788e3c3db95652588cd38fc6db69ba9b02"`
[INFO] [stdout] 0a23b457cfb8741cb5afe83cedcbc4788e3c3db95652588cd38fc6db69ba9b02
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/MakeWorkSimple/learn_rust:/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] 578f646f0ebdabfb938698281e904441027b3ba505266a91edc8f54b178a5088
[INFO] running `"docker" "start" "-a" "578f646f0ebdabfb938698281e904441027b3ba505266a91edc8f54b178a5088"`
[INFO] [stderr]    Compiling spider v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `"docker" "inspect" "578f646f0ebdabfb938698281e904441027b3ba505266a91edc8f54b178a5088"`
[INFO] running `"docker" "rm" "-f" "578f646f0ebdabfb938698281e904441027b3ba505266a91edc8f54b178a5088"`
[INFO] [stdout] 578f646f0ebdabfb938698281e904441027b3ba505266a91edc8f54b178a5088
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/MakeWorkSimple/learn_rust:/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] fd63e3cca16bb31dfe735bc6d8926c1855fe0c1f71180c1e8e1cbfd6a47f5f39
[INFO] running `"docker" "start" "-a" "fd63e3cca16bb31dfe735bc6d8926c1855fe0c1f71180c1e8e1cbfd6a47f5f39"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/spider-56add8e4761044aa
[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" "fd63e3cca16bb31dfe735bc6d8926c1855fe0c1f71180c1e8e1cbfd6a47f5f39"`
[INFO] running `"docker" "rm" "-f" "fd63e3cca16bb31dfe735bc6d8926c1855fe0c1f71180c1e8e1cbfd6a47f5f39"`
[INFO] [stdout] fd63e3cca16bb31dfe735bc6d8926c1855fe0c1f71180c1e8e1cbfd6a47f5f39