[INFO] crate rollbuf 0.1.0 is already in cache
[INFO] testing rollbuf-0.1.0 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate rollbuf 0.1.0 into work/builds/worker-11/source
[INFO] validating manifest of crates.io crate rollbuf 0.1.0 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rollbuf 0.1.0
[INFO] finished tweaking crates.io crate rollbuf 0.1.0
[INFO] tweaked toml for crates.io crate rollbuf 0.1.0 written to work/builds/worker-11/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 0a52c5b325c63ea4ad258921cbf07091fba8d9aed15e158eb7bba355ad21d21d
[INFO] running `"docker" "start" "-a" "0a52c5b325c63ea4ad258921cbf07091fba8d9aed15e158eb7bba355ad21d21d"`
[INFO] [stderr]    Compiling rollbuf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:45:52
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn fill_buf(&mut self) -> Result<bool, Box<Error>> {
[INFO] [stderr]    |                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `"docker" "inspect" "0a52c5b325c63ea4ad258921cbf07091fba8d9aed15e158eb7bba355ad21d21d"`
[INFO] running `"docker" "rm" "-f" "0a52c5b325c63ea4ad258921cbf07091fba8d9aed15e158eb7bba355ad21d21d"`
[INFO] [stdout] 0a52c5b325c63ea4ad258921cbf07091fba8d9aed15e158eb7bba355ad21d21d
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] b04415b5ca3e1ed2ea804a6f2b50925d8a2e93a1fe6d7fc360eec38662334e02
[INFO] running `"docker" "start" "-a" "b04415b5ca3e1ed2ea804a6f2b50925d8a2e93a1fe6d7fc360eec38662334e02"`
[INFO] [stderr]    Compiling rollbuf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:45:52
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn fill_buf(&mut self) -> Result<bool, Box<Error>> {
[INFO] [stderr]    |                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "b04415b5ca3e1ed2ea804a6f2b50925d8a2e93a1fe6d7fc360eec38662334e02"`
[INFO] running `"docker" "rm" "-f" "b04415b5ca3e1ed2ea804a6f2b50925d8a2e93a1fe6d7fc360eec38662334e02"`
[INFO] [stdout] b04415b5ca3e1ed2ea804a6f2b50925d8a2e93a1fe6d7fc360eec38662334e02
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 5fb4c8dbcb5c271ffb62e0c8b32770c891a082c119e4c6ac10c11783dcbc24ab
[INFO] running `"docker" "start" "-a" "5fb4c8dbcb5c271ffb62e0c8b32770c891a082c119e4c6ac10c11783dcbc24ab"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rollbuf-1b18bc280874d163
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_rollbuf_extend ... ok
[INFO] [stdout] test tests::test_rollbuf_no_extend ... 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 rollbuf
[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" "5fb4c8dbcb5c271ffb62e0c8b32770c891a082c119e4c6ac10c11783dcbc24ab"`
[INFO] running `"docker" "rm" "-f" "5fb4c8dbcb5c271ffb62e0c8b32770c891a082c119e4c6ac10c11783dcbc24ab"`
[INFO] [stdout] 5fb4c8dbcb5c271ffb62e0c8b32770c891a082c119e4c6ac10c11783dcbc24ab