[INFO] crate io-at 0.4.1 is already in cache
[INFO] testing io-at-0.4.1 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate io-at 0.4.1 into work/builds/worker-1/source
[INFO] validating manifest of crates.io crate io-at 0.4.1 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 io-at 0.4.1
[INFO] finished tweaking crates.io crate io-at 0.4.1
[INFO] tweaked toml for crates.io crate io-at 0.4.1 written to work/builds/worker-1/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-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/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] ee67a69405de56f39df9399262e94627d0d60f4e3d2f178f445a0b8736d66e7f
[INFO] running `"docker" "start" "-a" "ee67a69405de56f39df9399262e94627d0d60f4e3d2f178f445a0b8736d66e7f"`
[INFO] [stderr]    Compiling io-at v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:269:9
[INFO] [stderr]     |
[INFO] [stderr] 269 |         try!(f.seek(SeekFrom::Start(offs)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 277 |         try!(f.seek(SeekFrom::Start(offs)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `"docker" "inspect" "ee67a69405de56f39df9399262e94627d0d60f4e3d2f178f445a0b8736d66e7f"`
[INFO] running `"docker" "rm" "-f" "ee67a69405de56f39df9399262e94627d0d60f4e3d2f178f445a0b8736d66e7f"`
[INFO] [stdout] ee67a69405de56f39df9399262e94627d0d60f4e3d2f178f445a0b8736d66e7f
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/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] f88178c56072b36a32b117bee8bc856492c461fb87191f72c1d72b64c2a5248d
[INFO] running `"docker" "start" "-a" "f88178c56072b36a32b117bee8bc856492c461fb87191f72c1d72b64c2a5248d"`
[INFO] [stderr]    Compiling io-at v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:269:9
[INFO] [stderr]     |
[INFO] [stderr] 269 |         try!(f.seek(SeekFrom::Start(offs)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 277 |         try!(f.seek(SeekFrom::Start(offs)));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "f88178c56072b36a32b117bee8bc856492c461fb87191f72c1d72b64c2a5248d"`
[INFO] running `"docker" "rm" "-f" "f88178c56072b36a32b117bee8bc856492c461fb87191f72c1d72b64c2a5248d"`
[INFO] [stdout] f88178c56072b36a32b117bee8bc856492c461fb87191f72c1d72b64c2a5248d
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/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] 07bed928b019f229acbf636b299f9d483184e9cbb9130f5343943cd56a6bb457
[INFO] running `"docker" "start" "-a" "07bed928b019f229acbf636b299f9d483184e9cbb9130f5343943cd56a6bb457"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/io_at-ea16a1ce82ef8c7d
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test at_test_impl ... ok
[INFO] [stdout] test slice::do_t ... ok
[INFO] [stdout] test do_t_locked_seek ... ok
[INFO] [stdout] test take_test_impl ... ok
[INFO] [stdout] test do_t_cursor ... ok
[INFO] [stdout] test do_t_block_limit ... ok
[INFO] [stdout] test os::file::test::base ... ok
[INFO] [stdout] test vec::do_t ... ok
[INFO] [stdout] test take_test_specifics ... ok
[INFO] [stdout] test vec::ref_vec ... ok
[INFO] [stdout] test os::file::test::ref_ ... ok
[INFO] [stdout] test os::raw::do_t ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/custom_ref-4555a59d7315027a
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests io-at
[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" "07bed928b019f229acbf636b299f9d483184e9cbb9130f5343943cd56a6bb457"`
[INFO] running `"docker" "rm" "-f" "07bed928b019f229acbf636b299f9d483184e9cbb9130f5343943cd56a6bb457"`
[INFO] [stdout] 07bed928b019f229acbf636b299f9d483184e9cbb9130f5343943cd56a6bb457