[INFO] updating cached repository losvedir/bitcoin
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/losvedir/bitcoin
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/losvedir/bitcoin" "work/ex/beta-1.38-1/sources/1.37.0/gh/losvedir/bitcoin"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/losvedir/bitcoin'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/losvedir/bitcoin" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/losvedir/bitcoin"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/losvedir/bitcoin'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9069e811ae6edfa95a1f3608e06620e014c5c8b2
[INFO] sha for GitHub repo losvedir/bitcoin: 9069e811ae6edfa95a1f3608e06620e014c5c8b2
[INFO] validating manifest of losvedir/bitcoin 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 losvedir/bitcoin 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 losvedir/bitcoin
[INFO] finished frobbing losvedir/bitcoin
[INFO] frobbed toml for losvedir/bitcoin written to work/ex/beta-1.38-1/sources/1.37.0/gh/losvedir/bitcoin/Cargo.toml
[INFO] started frobbing losvedir/bitcoin
[INFO] finished frobbing losvedir/bitcoin
[INFO] frobbed toml for losvedir/bitcoin written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/losvedir/bitcoin/Cargo.toml
[INFO] crate losvedir/bitcoin 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/losvedir/bitcoin/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[INFO] the lockfile is outdated, regenerating it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 losvedir/bitcoin 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-3/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/losvedir/bitcoin:/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] 222ae2a1c4590e4b8ef387ad48528f948d0a19fc794c4276ae70bd34b67b827a
[INFO] running `"docker" "start" "-a" "222ae2a1c4590e4b8ef387ad48528f948d0a19fc794c4276ae70bd34b67b827a"`
[INFO] [stderr]    Compiling sha1 v0.6.0
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]    Compiling want v0.2.0
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling openssl v0.10.24
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling http v0.1.18
[INFO] [stderr]    Compiling tokio-buf v0.1.1
[INFO] [stderr]    Compiling string v0.2.1
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling tokio-threadpool v0.1.15
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling http-body v0.1.0
[INFO] [stderr]    Compiling h2 v0.1.26
[INFO] [stderr]    Compiling tokio-tls v0.2.1
[INFO] [stderr]    Compiling websocket v0.23.0
[INFO] [stderr]    Compiling hyper v0.12.33
[INFO] [stderr]    Compiling traitor v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error: expected identifier, found `"rustc-serialize"`
[INFO] [stderr]  --> src/main.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 | extern crate "rustc-serialize" as rustc_serialize;
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^^^ expected identifier
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `traitor`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "222ae2a1c4590e4b8ef387ad48528f948d0a19fc794c4276ae70bd34b67b827a"`
[INFO] running `"docker" "rm" "-f" "222ae2a1c4590e4b8ef387ad48528f948d0a19fc794c4276ae70bd34b67b827a"`
[INFO] [stdout] 222ae2a1c4590e4b8ef387ad48528f948d0a19fc794c4276ae70bd34b67b827a