[INFO] updating cached repository https://github.com/snoyberg/rust-streaming-utf8
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ae254013a17e32ad9783dfffd0c63f42aef9f0fd
[INFO] testing snoyberg/rust-streaming-utf8 against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnoyberg%2Frust-streaming-utf8" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/snoyberg/rust-streaming-utf8 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/snoyberg/rust-streaming-utf8
[INFO] finished tweaking git repo https://github.com/snoyberg/rust-streaming-utf8
[INFO] tweaked toml for git repo https://github.com/snoyberg/rust-streaming-utf8 written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/snoyberg/rust-streaming-utf8 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 78a0fe82f1e599282cd0162118830bc628fbcc7a9700c4464e664bf87860be3a
[INFO] running `"docker" "start" "-a" "78a0fe82f1e599282cd0162118830bc628fbcc7a9700c4464e664bf87860be3a"`
[INFO] [stderr]    Compiling rust-streaming-utf8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:56:32
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/main.rs:58:41
[INFO] [stderr]    |
[INFO] [stderr] 58 |             MyAppError::IOError(e) => e.cause(),
[INFO] [stderr]    |                                         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/main.rs:59:49
[INFO] [stderr]    |
[INFO] [stderr] 59 |             MyAppError::DecodeUtf8Error(e) => e.cause(),
[INFO] [stderr]    |                                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `"docker" "inspect" "78a0fe82f1e599282cd0162118830bc628fbcc7a9700c4464e664bf87860be3a"`
[INFO] running `"docker" "rm" "-f" "78a0fe82f1e599282cd0162118830bc628fbcc7a9700c4464e664bf87860be3a"`
[INFO] [stdout] 78a0fe82f1e599282cd0162118830bc628fbcc7a9700c4464e664bf87860be3a
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6651d965a1415ee0b2c2c0f34c36b2dcd2379e8f13ebdf433d0006489039f645
[INFO] running `"docker" "start" "-a" "6651d965a1415ee0b2c2c0f34c36b2dcd2379e8f13ebdf433d0006489039f645"`
[INFO] [stderr]    Compiling rust-streaming-utf8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:56:32
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/main.rs:58:41
[INFO] [stderr]    |
[INFO] [stderr] 58 |             MyAppError::IOError(e) => e.cause(),
[INFO] [stderr]    |                                         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/main.rs:59:49
[INFO] [stderr]    |
[INFO] [stderr] 59 |             MyAppError::DecodeUtf8Error(e) => e.cause(),
[INFO] [stderr]    |                                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `"docker" "inspect" "6651d965a1415ee0b2c2c0f34c36b2dcd2379e8f13ebdf433d0006489039f645"`
[INFO] running `"docker" "rm" "-f" "6651d965a1415ee0b2c2c0f34c36b2dcd2379e8f13ebdf433d0006489039f645"`
[INFO] [stdout] 6651d965a1415ee0b2c2c0f34c36b2dcd2379e8f13ebdf433d0006489039f645
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] e90209b392030153b027f0b3fd4fa50aaef7c14b0f89f2f7b4cf304a900cb8c2
[INFO] running `"docker" "start" "-a" "e90209b392030153b027f0b3fd4fa50aaef7c14b0f89f2f7b4cf304a900cb8c2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_streaming_utf8-7e450cc9b29aac48
[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" "e90209b392030153b027f0b3fd4fa50aaef7c14b0f89f2f7b4cf304a900cb8c2"`
[INFO] running `"docker" "rm" "-f" "e90209b392030153b027f0b3fd4fa50aaef7c14b0f89f2f7b4cf304a900cb8c2"`
[INFO] [stdout] e90209b392030153b027f0b3fd4fa50aaef7c14b0f89f2f7b4cf304a900cb8c2