[INFO] updating cached repository 0xbrt/twad
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/0xbrt/twad
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/0xbrt/twad" "work/ex/beta-1.38-1/sources/1.37.0/gh/0xbrt/twad"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/0xbrt/twad'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/0xbrt/twad" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/0xbrt/twad"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/0xbrt/twad'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1395c062f3f25d88ff5dd48dcb01757a4cdcaaf6
[INFO] sha for GitHub repo 0xbrt/twad: 1395c062f3f25d88ff5dd48dcb01757a4cdcaaf6
[INFO] validating manifest of 0xbrt/twad 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 0xbrt/twad 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 0xbrt/twad
[INFO] finished frobbing 0xbrt/twad
[INFO] frobbed toml for 0xbrt/twad written to work/ex/beta-1.38-1/sources/1.37.0/gh/0xbrt/twad/Cargo.toml
[INFO] started frobbing 0xbrt/twad
[INFO] finished frobbing 0xbrt/twad
[INFO] frobbed toml for 0xbrt/twad written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/0xbrt/twad/Cargo.toml
[INFO] crate 0xbrt/twad already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/0xbrt/twad/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 0xbrt/twad 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/0xbrt/twad:/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] 001e8c5994e5dbea46c068694ebea18bae30f02cadac1555518caf9542786303
[INFO] running `"docker" "start" "-a" "001e8c5994e5dbea46c068694ebea18bae30f02cadac1555518caf9542786303"`
[INFO] [stderr]    Compiling twad v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(io)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: patterns aren't allowed in methods without bodies
[INFO] [stderr]   --> src/main.rs:73:21
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn into_archive(mut self) -> std::io::Result<Archive<T>>;
[INFO] [stderr]    |                     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(patterns_in_fns_without_body)] on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #35203 <https://github.com/rust-lang/rust/issues/35203>
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `tee` found for type `std::io::Take<&mut std::fs::File>` in the current scope
[INFO] [stderr]   --> src/main.rs:47:22
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 take.tee(std::io::stdout()).read_to_end(&mut Vec::new()).unwrap();
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `twad`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "001e8c5994e5dbea46c068694ebea18bae30f02cadac1555518caf9542786303"`
[INFO] running `"docker" "rm" "-f" "001e8c5994e5dbea46c068694ebea18bae30f02cadac1555518caf9542786303"`
[INFO] [stdout] 001e8c5994e5dbea46c068694ebea18bae30f02cadac1555518caf9542786303