[INFO] crate serial 0.4.0 is already in cache
[INFO] extracting crate serial 0.4.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/serial/0.4.0
[INFO] extracting crate serial 0.4.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/serial/0.4.0
[INFO] validating manifest of serial-0.4.0 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 serial-0.4.0 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 serial-0.4.0
[INFO] removed path dependency serial-core from serial-0.4.0
[INFO] removed path dependency serial-unix from serial-0.4.0
[INFO] removed path dependency serial-windows from serial-0.4.0
[INFO] finished frobbing serial-0.4.0
[INFO] frobbed toml for serial-0.4.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/serial/0.4.0/Cargo.toml
[INFO] started frobbing serial-0.4.0
[INFO] removed path dependency serial-core from serial-0.4.0
[INFO] removed path dependency serial-unix from serial-0.4.0
[INFO] removed path dependency serial-windows from serial-0.4.0
[INFO] finished frobbing serial-0.4.0
[INFO] frobbed toml for serial-0.4.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/serial/0.4.0/Cargo.toml
[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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing serial-0.4.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/serial/0.4.0:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 0288b5f9f011ade1d5e109b702ef78c3d95d8619dc431d320da95720b68b76c5
[INFO] running `"docker" "start" "-a" "0288b5f9f011ade1d5e109b702ef78c3d95d8619dc431d320da95720b68b76c5"`
[INFO] [stderr]    Compiling serial-core v0.4.0
[INFO] [stderr]    Compiling termios v0.2.2
[INFO] [stderr]    Compiling ioctl-rs v0.1.6
[INFO] [stderr]    Compiling serial-unix v0.4.0
[INFO] [stderr]    Compiling serial v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `"docker" "inspect" "0288b5f9f011ade1d5e109b702ef78c3d95d8619dc431d320da95720b68b76c5"`
[INFO] running `"docker" "rm" "-f" "0288b5f9f011ade1d5e109b702ef78c3d95d8619dc431d320da95720b68b76c5"`
[INFO] [stdout] 0288b5f9f011ade1d5e109b702ef78c3d95d8619dc431d320da95720b68b76c5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/serial/0.4.0:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4d0ea4e58ed4b4e03abae800be7c13bbd1c7fd00b790e8ef47c73d239e3199c2
[INFO] running `"docker" "start" "-a" "4d0ea4e58ed4b4e03abae800be7c13bbd1c7fd00b790e8ef47c73d239e3199c2"`
[INFO] [stderr]    Compiling serial v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::prelude`
[INFO] [stderr]  --> examples/read_write.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `"docker" "inspect" "4d0ea4e58ed4b4e03abae800be7c13bbd1c7fd00b790e8ef47c73d239e3199c2"`
[INFO] running `"docker" "rm" "-f" "4d0ea4e58ed4b4e03abae800be7c13bbd1c7fd00b790e8ef47c73d239e3199c2"`
[INFO] [stdout] 4d0ea4e58ed4b4e03abae800be7c13bbd1c7fd00b790e8ef47c73d239e3199c2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/serial/0.4.0:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 11398b78c791ef6daeb6b28ce70e31b9d29eb03b3e5df8f72c507ab40fc36974
[INFO] running `"docker" "start" "-a" "11398b78c791ef6daeb6b28ce70e31b9d29eb03b3e5df8f72c507ab40fc36974"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/serial-a8b39ffdbafab375
[INFO] [stderr]    Doc-tests serial
[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] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - open (line 57) ... ok
[INFO] [stdout] test src/lib.rs - open (line 50) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "11398b78c791ef6daeb6b28ce70e31b9d29eb03b3e5df8f72c507ab40fc36974"`
[INFO] running `"docker" "rm" "-f" "11398b78c791ef6daeb6b28ce70e31b9d29eb03b3e5df8f72c507ab40fc36974"`
[INFO] [stdout] 11398b78c791ef6daeb6b28ce70e31b9d29eb03b3e5df8f72c507ab40fc36974