[INFO] updating cached repository https://github.com/KeyboardFire/babble
[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] 81f62d344385882d202b0440a34e4dfbffecbb42
[INFO] testing KeyboardFire/babble against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeyboardFire%2Fbabble" "work/builds/worker-11/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KeyboardFire/babble 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 git repo https://github.com/KeyboardFire/babble
[INFO] finished tweaking git repo https://github.com/KeyboardFire/babble
[INFO] tweaked toml for git repo https://github.com/KeyboardFire/babble written to work/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/KeyboardFire/babble already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /big/crater/work/builds/worker-11/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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] d549130ae525d649cd01a13e92a5fbaa2a7b64bfb49386a6e7e90044bc68014c
[INFO] running `"docker" "start" "-a" "d549130ae525d649cd01a13e92a5fbaa2a7b64bfb49386a6e7e90044bc68014c"`
[INFO] [stderr]    Compiling babble v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:43:18
[INFO] [stderr]    |
[INFO] [stderr] 43 |     Block(Vec<Rc<Fn(&mut Babble, &mut Write, &mut Read)>>)
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Babble, &mut Write, &mut Read)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:43:39
[INFO] [stderr]    |
[INFO] [stderr] 43 |     Block(Vec<Rc<Fn(&mut Babble, &mut Write, &mut Read)>>)
[INFO] [stderr]    |                                       ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:43:51
[INFO] [stderr]    |
[INFO] [stderr] 43 |     Block(Vec<Rc<Fn(&mut Babble, &mut Write, &mut Read)>>)
[INFO] [stderr]    |                                                   ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:92:37
[INFO] [stderr]    |
[INFO] [stderr] 92 |                        stdout: &mut Write, stdin: &mut Read) {
[INFO] [stderr]    |                                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:92:56
[INFO] [stderr]    |
[INFO] [stderr] 92 |                        stdout: &mut Write, stdin: &mut Read) {
[INFO] [stderr]    |                                                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:100:41
[INFO] [stderr]     |
[INFO] [stderr] 100 |       fn tokenize(code: String) -> Vec<Rc<Fn(&mut Babble, &mut Write,
[INFO] [stderr]     |  _________________________________________^
[INFO] [stderr] 101 | |                                            &mut Read)>> {
[INFO] [stderr]     | |_____________________________________________________^
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 100 |     fn tokenize(code: String) -> Vec<Rc<dyn Fn(&mut Babble, &mut Write,
[INFO] [stderr] 101 |                                            &mut Read)>> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:100:62
[INFO] [stderr]     |
[INFO] [stderr] 100 |     fn tokenize(code: String) -> Vec<Rc<Fn(&mut Babble, &mut Write,
[INFO] [stderr]     |                                                              ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:101:49
[INFO] [stderr]     |
[INFO] [stderr] 101 | ...                   &mut Read)>> {
[INFO] [stderr]     |                            ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:114:26
[INFO] [stderr]     |
[INFO] [stderr] 114 |             -> Option<Rc<Fn(&mut Babble, &mut Write, &mut Read)>> {
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Babble, &mut Write, &mut Read)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:114:47
[INFO] [stderr]     |
[INFO] [stderr] 114 |             -> Option<Rc<Fn(&mut Babble, &mut Write, &mut Read)>> {
[INFO] [stderr]     |                                               ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:114:59
[INFO] [stderr]     |
[INFO] [stderr] 114 |             -> Option<Rc<Fn(&mut Babble, &mut Write, &mut Read)>> {
[INFO] [stderr]     |                                                           ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:337:26
[INFO] [stderr]     |
[INFO] [stderr] 337 |             -> Option<Rc<Fn(&mut Babble, &mut Write, &mut Read)>> {
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Babble, &mut Write, &mut Read)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:337:47
[INFO] [stderr]     |
[INFO] [stderr] 337 |             -> Option<Rc<Fn(&mut Babble, &mut Write, &mut Read)>> {
[INFO] [stderr]     |                                               ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:337:59
[INFO] [stderr]     |
[INFO] [stderr] 337 |             -> Option<Rc<Fn(&mut Babble, &mut Write, &mut Read)>> {
[INFO] [stderr]     |                                                           ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:378:26
[INFO] [stderr]     |
[INFO] [stderr] 378 |             -> Option<Rc<Fn(&mut Babble, &mut Write, &mut Read)>> {
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Babble, &mut Write, &mut Read)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:378:47
[INFO] [stderr]     |
[INFO] [stderr] 378 |             -> Option<Rc<Fn(&mut Babble, &mut Write, &mut Read)>> {
[INFO] [stderr]     |                                               ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:378:59
[INFO] [stderr]     |
[INFO] [stderr] 378 |             -> Option<Rc<Fn(&mut Babble, &mut Write, &mut Read)>> {
[INFO] [stderr]     |                                                           ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:396:26
[INFO] [stderr]     |
[INFO] [stderr] 396 |             -> Option<Rc<Fn(&mut Babble, &mut Write, &mut Read)>> {
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Babble, &mut Write, &mut Read)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:396:47
[INFO] [stderr]     |
[INFO] [stderr] 396 |             -> Option<Rc<Fn(&mut Babble, &mut Write, &mut Read)>> {
[INFO] [stderr]     |                                               ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:396:59
[INFO] [stderr]     |
[INFO] [stderr] 396 |             -> Option<Rc<Fn(&mut Babble, &mut Write, &mut Read)>> {
[INFO] [stderr]     |                                                           ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `babble`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d549130ae525d649cd01a13e92a5fbaa2a7b64bfb49386a6e7e90044bc68014c"`
[INFO] running `"docker" "rm" "-f" "d549130ae525d649cd01a13e92a5fbaa2a7b64bfb49386a6e7e90044bc68014c"`
[INFO] [stdout] d549130ae525d649cd01a13e92a5fbaa2a7b64bfb49386a6e7e90044bc68014c