[INFO] updating cached repository marcan/uhub-proxy
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/marcan/uhub-proxy
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/marcan/uhub-proxy" "work/ex/beta-1.37-6/sources/1.36.0/gh/marcan/uhub-proxy"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/marcan/uhub-proxy'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/marcan/uhub-proxy" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/marcan/uhub-proxy"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/marcan/uhub-proxy'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b162ab07579518564df6fc02d0a3a8c9a4b60249
[INFO] sha for GitHub repo marcan/uhub-proxy: b162ab07579518564df6fc02d0a3a8c9a4b60249
[INFO] validating manifest of marcan/uhub-proxy on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of marcan/uhub-proxy on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing marcan/uhub-proxy
[INFO] finished frobbing marcan/uhub-proxy
[INFO] frobbed toml for marcan/uhub-proxy written to work/ex/beta-1.37-6/sources/1.36.0/gh/marcan/uhub-proxy/Cargo.toml
[INFO] started frobbing marcan/uhub-proxy
[INFO] finished frobbing marcan/uhub-proxy
[INFO] frobbed toml for marcan/uhub-proxy written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/marcan/uhub-proxy/Cargo.toml
[INFO] crate marcan/uhub-proxy already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/marcan/uhub-proxy/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[INFO] the lockfile is outdated, regenerating it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" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing marcan/uhub-proxy against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/marcan/uhub-proxy:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 86e1fa1a439215be1e2ec3dba5b802a0cd8013e3ba2ba397e9b6b98faa4fb561
[INFO] running `"docker" "start" "-a" "86e1fa1a439215be1e2ec3dba5b802a0cd8013e3ba2ba397e9b6b98faa4fb561"`
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling miow v0.1.5
[INFO] [stderr]    Compiling mio v0.5.1
[INFO] [stderr]    Compiling uhub_proxy v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Evented`
[INFO] [stderr]   --> src/main.rs:18:30
[INFO] [stderr]    |
[INFO] [stderr] 18 | use mio::{TryRead, TryWrite, Evented, Token, EventSet, PollOpt};
[INFO] [stderr]    |                              ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.22s
[INFO] running `"docker" "inspect" "86e1fa1a439215be1e2ec3dba5b802a0cd8013e3ba2ba397e9b6b98faa4fb561"`
[INFO] running `"docker" "rm" "-f" "86e1fa1a439215be1e2ec3dba5b802a0cd8013e3ba2ba397e9b6b98faa4fb561"`
[INFO] [stdout] 86e1fa1a439215be1e2ec3dba5b802a0cd8013e3ba2ba397e9b6b98faa4fb561
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/marcan/uhub-proxy:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 91430bc498b0c26cfb503164b8618a3c26a63f7cf98e030c7d4fbd376348d5ac
[INFO] running `"docker" "start" "-a" "91430bc498b0c26cfb503164b8618a3c26a63f7cf98e030c7d4fbd376348d5ac"`
[INFO] [stderr]    Compiling uhub_proxy v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Evented`
[INFO] [stderr]   --> src/main.rs:18:30
[INFO] [stderr]    |
[INFO] [stderr] 18 | use mio::{TryRead, TryWrite, Evented, Token, EventSet, PollOpt};
[INFO] [stderr]    |                              ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `"docker" "inspect" "91430bc498b0c26cfb503164b8618a3c26a63f7cf98e030c7d4fbd376348d5ac"`
[INFO] running `"docker" "rm" "-f" "91430bc498b0c26cfb503164b8618a3c26a63f7cf98e030c7d4fbd376348d5ac"`
[INFO] [stdout] 91430bc498b0c26cfb503164b8618a3c26a63f7cf98e030c7d4fbd376348d5ac
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/marcan/uhub-proxy:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] e7c7e00407cab4e90dc7aa88491091d9fcdaa7f26e5c7be1a131c0102f946e9a
[INFO] running `"docker" "start" "-a" "e7c7e00407cab4e90dc7aa88491091d9fcdaa7f26e5c7be1a131c0102f946e9a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/uhub_proxy-105e9cc1957bd62e
[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" "e7c7e00407cab4e90dc7aa88491091d9fcdaa7f26e5c7be1a131c0102f946e9a"`
[INFO] running `"docker" "rm" "-f" "e7c7e00407cab4e90dc7aa88491091d9fcdaa7f26e5c7be1a131c0102f946e9a"`
[INFO] [stdout] e7c7e00407cab4e90dc7aa88491091d9fcdaa7f26e5c7be1a131c0102f946e9a