[INFO] crate circbuf 0.1.4 is already in cache
[INFO] extracting crate circbuf 0.1.4 into work/ex/beta-1.38-1/sources/1.37.0/reg/circbuf/0.1.4
[INFO] extracting crate circbuf 0.1.4 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/circbuf/0.1.4
[INFO] validating manifest of circbuf-0.1.4 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 circbuf-0.1.4 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 circbuf-0.1.4
[INFO] finished frobbing circbuf-0.1.4
[INFO] frobbed toml for circbuf-0.1.4 written to work/ex/beta-1.38-1/sources/1.37.0/reg/circbuf/0.1.4/Cargo.toml
[INFO] started frobbing circbuf-0.1.4
[INFO] finished frobbing circbuf-0.1.4
[INFO] frobbed toml for circbuf-0.1.4 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/circbuf/0.1.4/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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing circbuf-0.1.4 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/circbuf/0.1.4:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] a58888ec735be881f25c16741421a38712f92fc5ee1659cfeed0369844f8041f
[INFO] running `"docker" "start" "-a" "a58888ec735be881f25c16741421a38712f92fc5ee1659cfeed0369844f8041f"`
[INFO] [stderr]    Compiling circbuf v0.1.4 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:160:32
[INFO] [stderr]     |
[INFO] [stderr] 160 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `"docker" "inspect" "a58888ec735be881f25c16741421a38712f92fc5ee1659cfeed0369844f8041f"`
[INFO] running `"docker" "rm" "-f" "a58888ec735be881f25c16741421a38712f92fc5ee1659cfeed0369844f8041f"`
[INFO] [stdout] a58888ec735be881f25c16741421a38712f92fc5ee1659cfeed0369844f8041f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/circbuf/0.1.4:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b3cc08d39cfc29915d1155725500261378a54088b4c75cb7e2602a5883e224ab
[INFO] running `"docker" "start" "-a" "b3cc08d39cfc29915d1155725500261378a54088b4c75cb7e2602a5883e224ab"`
[INFO] [stderr]    Compiling vecio v0.1.0
[INFO] [stderr]    Compiling circbuf v0.1.4 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:160:32
[INFO] [stderr]     |
[INFO] [stderr] 160 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.11s
[INFO] running `"docker" "inspect" "b3cc08d39cfc29915d1155725500261378a54088b4c75cb7e2602a5883e224ab"`
[INFO] running `"docker" "rm" "-f" "b3cc08d39cfc29915d1155725500261378a54088b4c75cb7e2602a5883e224ab"`
[INFO] [stdout] b3cc08d39cfc29915d1155725500261378a54088b4c75cb7e2602a5883e224ab
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/circbuf/0.1.4:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 8b277487c4530c8c3fcc2e4041f17abf1ee3e85f923da2909ba8227b814a1b43
[INFO] running `"docker" "start" "-a" "8b277487c4530c8c3fcc2e4041f17abf1ee3e85f923da2909ba8227b814a1b43"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/circbuf-2cb3224ae6ace53b
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test tests::vecio ... ok
[INFO] [stdout] test tests::read_and_write_bytes ... ok
[INFO] [stdout] test tests::put_peek_and_get_bytes ... ok
[INFO] [stderr]    Doc-tests circbuf
[INFO] [stdout] test tests::find_bytes ... ok
[INFO] [stdout] test tests::get_bytes_and_avail ... ok
[INFO] [stdout] test tests::create_circbuf_with_capacity ... ok
[INFO] [stdout] test tests::create_circbuf ... ok
[INFO] [stdout] test tests::grow_buffer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 35) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "8b277487c4530c8c3fcc2e4041f17abf1ee3e85f923da2909ba8227b814a1b43"`
[INFO] running `"docker" "rm" "-f" "8b277487c4530c8c3fcc2e4041f17abf1ee3e85f923da2909ba8227b814a1b43"`
[INFO] [stdout] 8b277487c4530c8c3fcc2e4041f17abf1ee3e85f923da2909ba8227b814a1b43