[INFO] fetching crate modbus 1.0.3...
[INFO] extracting crate modbus 1.0.3 into work/ex/beta-1.37-6/sources/1.36.0/reg/modbus/1.0.3
[INFO] extracting crate modbus 1.0.3 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/modbus/1.0.3
[INFO] validating manifest of modbus-1.0.3 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 modbus-1.0.3 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 modbus-1.0.3
[INFO] finished frobbing modbus-1.0.3
[INFO] frobbed toml for modbus-1.0.3 written to work/ex/beta-1.37-6/sources/1.36.0/reg/modbus/1.0.3/Cargo.toml
[INFO] started frobbing modbus-1.0.3
[INFO] finished frobbing modbus-1.0.3
[INFO] frobbed toml for modbus-1.0.3 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/modbus/1.0.3/Cargo.toml
[INFO] crate modbus-1.0.3 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] building modbus-1.0.3 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-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/modbus/1.0.3:/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] 187e8222a4ea8cdb43b80d1b2d64ba547efec1554ca828bfdda11ccb3208ee33
[INFO] running `"docker" "start" "-a" "187e8222a4ea8cdb43b80d1b2d64ba547efec1554ca828bfdda11ccb3208ee33"`
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling modbus v1.0.3 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.84s
[INFO] running `"docker" "inspect" "187e8222a4ea8cdb43b80d1b2d64ba547efec1554ca828bfdda11ccb3208ee33"`
[INFO] running `"docker" "rm" "-f" "187e8222a4ea8cdb43b80d1b2d64ba547efec1554ca828bfdda11ccb3208ee33"`
[INFO] [stdout] 187e8222a4ea8cdb43b80d1b2d64ba547efec1554ca828bfdda11ccb3208ee33
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/modbus/1.0.3:/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] 1ff10f354b296c1cf4aef1b7834d68ec412cb042c9360b96004db1ef0bbf460c
[INFO] running `"docker" "start" "-a" "1ff10f354b296c1cf4aef1b7834d68ec412cb042c9360b96004db1ef0bbf460c"`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling modbus-test-server v0.0.4
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling modbus v1.0.3 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.62s
[INFO] running `"docker" "inspect" "1ff10f354b296c1cf4aef1b7834d68ec412cb042c9360b96004db1ef0bbf460c"`
[INFO] running `"docker" "rm" "-f" "1ff10f354b296c1cf4aef1b7834d68ec412cb042c9360b96004db1ef0bbf460c"`
[INFO] [stdout] 1ff10f354b296c1cf4aef1b7834d68ec412cb042c9360b96004db1ef0bbf460c