[INFO] crate tk-bufstream 0.3.0 is already in cache
[INFO] extracting crate tk-bufstream 0.3.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/tk-bufstream/0.3.0
[INFO] extracting crate tk-bufstream 0.3.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tk-bufstream/0.3.0
[INFO] validating manifest of tk-bufstream-0.3.0 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 tk-bufstream-0.3.0 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 tk-bufstream-0.3.0
[INFO] finished frobbing tk-bufstream-0.3.0
[INFO] frobbed toml for tk-bufstream-0.3.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/tk-bufstream/0.3.0/Cargo.toml
[INFO] started frobbing tk-bufstream-0.3.0
[INFO] finished frobbing tk-bufstream-0.3.0
[INFO] frobbed toml for tk-bufstream-0.3.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tk-bufstream/0.3.0/Cargo.toml
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing tk-bufstream-0.3.0 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-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tk-bufstream/0.3.0:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 2d417b3ee2ec91d1a24089b2a46b2782f76a98fa9d6b252efe0d0ecf7134ea7c
[INFO] running `"docker" "start" "-a" "2d417b3ee2ec91d1a24089b2a46b2782f76a98fa9d6b252efe0d0ecf7134ea7c"`
[INFO] [stderr]    Compiling tk-bufstream v0.3.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `"docker" "inspect" "2d417b3ee2ec91d1a24089b2a46b2782f76a98fa9d6b252efe0d0ecf7134ea7c"`
[INFO] running `"docker" "rm" "-f" "2d417b3ee2ec91d1a24089b2a46b2782f76a98fa9d6b252efe0d0ecf7134ea7c"`
[INFO] [stdout] 2d417b3ee2ec91d1a24089b2a46b2782f76a98fa9d6b252efe0d0ecf7134ea7c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tk-bufstream/0.3.0:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 12e8d53a911705ebe6a2251d33f7807a3050e63016eb71d8aa6206f5f35e7678
[INFO] running `"docker" "start" "-a" "12e8d53a911705ebe6a2251d33f7807a3050e63016eb71d8aa6206f5f35e7678"`
[INFO] [stderr]    Compiling tk-bufstream v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]  --> examples/raw_echo.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::str;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.90s
[INFO] running `"docker" "inspect" "12e8d53a911705ebe6a2251d33f7807a3050e63016eb71d8aa6206f5f35e7678"`
[INFO] running `"docker" "rm" "-f" "12e8d53a911705ebe6a2251d33f7807a3050e63016eb71d8aa6206f5f35e7678"`
[INFO] [stdout] 12e8d53a911705ebe6a2251d33f7807a3050e63016eb71d8aa6206f5f35e7678
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/tk-bufstream/0.3.0:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] dfdeb5f9043679ab6b3d7544d0cc8288abe1bac12b5dc4200f2dc81dc3315dcb
[INFO] running `"docker" "start" "-a" "dfdeb5f9043679ab6b3d7544d0cc8288abe1bac12b5dc4200f2dc81dc3315dcb"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tk_bufstream-5ea2d1265f17aa43
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test mock::test::mock_data ... ok
[INFO] [stdout] test mock::test::mock ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tk_bufstream
[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" "dfdeb5f9043679ab6b3d7544d0cc8288abe1bac12b5dc4200f2dc81dc3315dcb"`
[INFO] running `"docker" "rm" "-f" "dfdeb5f9043679ab6b3d7544d0cc8288abe1bac12b5dc4200f2dc81dc3315dcb"`
[INFO] [stdout] dfdeb5f9043679ab6b3d7544d0cc8288abe1bac12b5dc4200f2dc81dc3315dcb