[INFO] updating cached repository https://github.com/djherbis/rust-stream
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] 4eae0171bede89eeaff34d0bacedeefc22228bd8
[INFO] checking djherbis/rust-stream against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjherbis%2Frust-stream" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/djherbis/rust-stream on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/djherbis/rust-stream
[INFO] finished tweaking git repo https://github.com/djherbis/rust-stream
[INFO] tweaked toml for git repo https://github.com/djherbis/rust-stream written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/djherbis/rust-stream already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-13/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-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-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 88362b0bca8a3f99e4c434a0b3c10b4967dd8d640c259a6a420cbb239e72f988
[INFO] running `"docker" "start" "-a" "88362b0bca8a3f99e4c434a0b3c10b4967dd8d640c259a6a420cbb239e72f988"`
[INFO] [stderr]     Checking stream v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(alloc)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stderr]  --> src/buffer.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use self::alloc::raw_vec::RawVec;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stderr]   --> src/buffer.rs:13:11
[INFO] [stderr]    |
[INFO] [stderr] 13 |     data: RawVec<u8>,
[INFO] [stderr]    |           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stderr]   --> src/buffer.rs:20:19
[INFO] [stderr]    |
[INFO] [stderr] 20 |             data: RawVec::with_capacity(cap),
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `cap` found for type `alloc::raw_vec::RawVec<u8>` in the current scope
[INFO] [stderr]   --> src/buffer.rs:30:22
[INFO] [stderr]    |
[INFO] [stderr] 30 |         if self.data.cap() - self.len() >= buf.len() {
[INFO] [stderr]    |                      ^^^ private field, not a method
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stderr]   --> src/buffer.rs:35:52
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let data = slice::from_raw_parts(self.data.ptr(), self.len());
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stderr]   --> src/buffer.rs:45:37
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let write_start = self.data.ptr().offset(len as isize);
[INFO] [stderr]    |                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `cap` found for type `alloc::raw_vec::RawVec<u8>` in the current scope
[INFO] [stderr]   --> src/buffer.rs:46:35
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let remaining = self.data.cap() - len;
[INFO] [stderr]    |                                   ^^^ private field, not a method
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stderr]   --> src/buffer.rs:62:40
[INFO] [stderr]    |
[INFO] [stderr] 62 |             let read_start = self.data.ptr().offset(from as isize);
[INFO] [stderr]    |                                        ^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 9 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0599, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `stream`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(alloc)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stderr]  --> src/buffer.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use self::alloc::raw_vec::RawVec;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stderr]   --> src/buffer.rs:13:11
[INFO] [stderr]    |
[INFO] [stderr] 13 |     data: RawVec<u8>,
[INFO] [stderr]    |           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stderr]   --> src/buffer.rs:20:19
[INFO] [stderr]    |
[INFO] [stderr] 20 |             data: RawVec::with_capacity(cap),
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `cap` found for type `alloc::raw_vec::RawVec<u8>` in the current scope
[INFO] [stderr]   --> src/buffer.rs:30:22
[INFO] [stderr]    |
[INFO] [stderr] 30 |         if self.data.cap() - self.len() >= buf.len() {
[INFO] [stderr]    |                      ^^^ private field, not a method
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stderr]   --> src/buffer.rs:35:52
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let data = slice::from_raw_parts(self.data.ptr(), self.len());
[INFO] [stderr]    |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stderr]   --> src/buffer.rs:45:37
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let write_start = self.data.ptr().offset(len as isize);
[INFO] [stderr]    |                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `cap` found for type `alloc::raw_vec::RawVec<u8>` in the current scope
[INFO] [stderr]   --> src/buffer.rs:46:35
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let remaining = self.data.cap() - len;
[INFO] [stderr]    |                                   ^^^ private field, not a method
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'raw_vec_internals': implementation detail
[INFO] [stderr]   --> src/buffer.rs:62:40
[INFO] [stderr]    |
[INFO] [stderr] 62 |             let read_start = self.data.ptr().offset(from as isize);
[INFO] [stderr]    |                                        ^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 9 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0599, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `stream`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "88362b0bca8a3f99e4c434a0b3c10b4967dd8d640c259a6a420cbb239e72f988"`
[INFO] running `"docker" "rm" "-f" "88362b0bca8a3f99e4c434a0b3c10b4967dd8d640c259a6a420cbb239e72f988"`
[INFO] [stdout] 88362b0bca8a3f99e4c434a0b3c10b4967dd8d640c259a6a420cbb239e72f988