[INFO] updating cached repository rwestlund/superv-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rwestlund/superv-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rwestlund/superv-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/rwestlund/superv-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/rwestlund/superv-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rwestlund/superv-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rwestlund/superv-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rwestlund/superv-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 218420f5784d7e23eba7575741c4eaa819c963bd
[INFO] sha for GitHub repo rwestlund/superv-rust: 218420f5784d7e23eba7575741c4eaa819c963bd
[INFO] validating manifest of rwestlund/superv-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 rwestlund/superv-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 rwestlund/superv-rust
[INFO] finished frobbing rwestlund/superv-rust
[INFO] frobbed toml for rwestlund/superv-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/rwestlund/superv-rust/Cargo.toml
[INFO] started frobbing rwestlund/superv-rust
[INFO] finished frobbing rwestlund/superv-rust
[INFO] frobbed toml for rwestlund/superv-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rwestlund/superv-rust/Cargo.toml
[INFO] crate rwestlund/superv-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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/rwestlund/superv-rust/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 rwestlund/superv-rust 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/rwestlund/superv-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] ce028d2e78cd154adb5b91c9583950224517787ba83a898b408b2499699a45ff
[INFO] running `"docker" "start" "-a" "ce028d2e78cd154adb5b91c9583950224517787ba83a898b408b2499699a45ff"`
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling superv v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs::OpenOptions`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::fs::OpenOptions;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::os::unix::io::AsRawFd`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::os::unix::io::AsRawFd;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::os::unix::io::FromRawFd`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::os::unix::io::FromRawFd;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.70s
[INFO] running `"docker" "inspect" "ce028d2e78cd154adb5b91c9583950224517787ba83a898b408b2499699a45ff"`
[INFO] running `"docker" "rm" "-f" "ce028d2e78cd154adb5b91c9583950224517787ba83a898b408b2499699a45ff"`
[INFO] [stdout] ce028d2e78cd154adb5b91c9583950224517787ba83a898b408b2499699a45ff
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/rwestlund/superv-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 963a86416f356f2ae8b818d98964723b1b8b2254d9ffe2c575dd41f1ec05dc8c
[INFO] running `"docker" "start" "-a" "963a86416f356f2ae8b818d98964723b1b8b2254d9ffe2c575dd41f1ec05dc8c"`
[INFO] [stderr]    Compiling superv v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs::OpenOptions`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::fs::OpenOptions;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::os::unix::io::AsRawFd`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::os::unix::io::AsRawFd;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::os::unix::io::FromRawFd`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::os::unix::io::FromRawFd;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "963a86416f356f2ae8b818d98964723b1b8b2254d9ffe2c575dd41f1ec05dc8c"`
[INFO] running `"docker" "rm" "-f" "963a86416f356f2ae8b818d98964723b1b8b2254d9ffe2c575dd41f1ec05dc8c"`
[INFO] [stdout] 963a86416f356f2ae8b818d98964723b1b8b2254d9ffe2c575dd41f1ec05dc8c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/rwestlund/superv-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 75af4b263871c137f18ff2bdb97c2cf125f6e9aaf3612e79a1f9c9fd7725b0b7
[INFO] running `"docker" "start" "-a" "75af4b263871c137f18ff2bdb97c2cf125f6e9aaf3612e79a1f9c9fd7725b0b7"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/superv-08b8e89750e04042
[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" "75af4b263871c137f18ff2bdb97c2cf125f6e9aaf3612e79a1f9c9fd7725b0b7"`
[INFO] running `"docker" "rm" "-f" "75af4b263871c137f18ff2bdb97c2cf125f6e9aaf3612e79a1f9c9fd7725b0b7"`
[INFO] [stdout] 75af4b263871c137f18ff2bdb97c2cf125f6e9aaf3612e79a1f9c9fd7725b0b7