[INFO] fetching crate futures-bufio 0.2.0...
[INFO] checking futures-bufio-0.2.0 against master#74e80468347471779be6060d8d7d6d04e98e467f for pr-72788
[INFO] extracting crate futures-bufio 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate futures-bufio 0.2.0 on toolchain 74e80468347471779be6060d8d7d6d04e98e467f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate futures-bufio 0.2.0
[INFO] finished tweaking crates.io crate futures-bufio 0.2.0
[INFO] tweaked toml for crates.io crate futures-bufio 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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" "+74e80468347471779be6060d8d7d6d04e98e467f" "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] 19e1f881085bb9a0fd88ef0549619398116bfd421fe41202ef6c589995a27606
[INFO] running `"docker" "start" "-a" "19e1f881085bb9a0fd88ef0549619398116bfd421fe41202ef6c589995a27606"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking futures-bufio v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/read.rs:211:47
[INFO] [stderr]     |
[INFO] [stderr] 211 |         let r = mem::replace(&mut self.inner, mem::uninitialized());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/read.rs:212:47
[INFO] [stderr]     |
[INFO] [stderr] 212 |         let buf = mem::replace(&mut self.buf, mem::uninitialized());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/read.rs:213:53
[INFO] [stderr]     |
[INFO] [stderr] 213 |         let mut pool = mem::replace(&mut self.pool, mem::uninitialized());
[INFO] [stderr]     |                                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/write.rs:158:47
[INFO] [stderr]     |
[INFO] [stderr] 158 |         let w = mem::replace(&mut self.inner, mem::uninitialized());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/write.rs:159:47
[INFO] [stderr]     |
[INFO] [stderr] 159 |         let buf = mem::replace(&mut self.buf, mem::uninitialized());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/write.rs:160:53
[INFO] [stderr]     |
[INFO] [stderr] 160 |         let mut pool = mem::replace(&mut self.pool, mem::uninitialized());
[INFO] [stderr]     |                                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/read.rs:211:47
[INFO] [stderr]     |
[INFO] [stderr] 211 |         let r = mem::replace(&mut self.inner, mem::uninitialized());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/read.rs:212:47
[INFO] [stderr]     |
[INFO] [stderr] 212 |         let buf = mem::replace(&mut self.buf, mem::uninitialized());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/read.rs:213:53
[INFO] [stderr]     |
[INFO] [stderr] 213 |         let mut pool = mem::replace(&mut self.pool, mem::uninitialized());
[INFO] [stderr]     |                                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/write.rs:158:47
[INFO] [stderr]     |
[INFO] [stderr] 158 |         let w = mem::replace(&mut self.inner, mem::uninitialized());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/write.rs:159:47
[INFO] [stderr]     |
[INFO] [stderr] 159 |         let buf = mem::replace(&mut self.buf, mem::uninitialized());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]    --> src/write.rs:160:53
[INFO] [stderr]     |
[INFO] [stderr] 160 |         let mut pool = mem::replace(&mut self.pool, mem::uninitialized());
[INFO] [stderr]     |                                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `rem` is never read
[INFO] [stderr]    --> src/write.rs:295:17
[INFO] [stderr]     |
[INFO] [stderr] 295 |                 rem -= n_write;
[INFO] [stderr]     |                 ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | #![feature(conservative_impl_trait)]
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the type `std::boxed::Box<[u8]>` does not permit being left uninitialized
[INFO] [stderr]    --> src/read.rs:212:47
[INFO] [stderr]     |
[INFO] [stderr] 212 |         let buf = mem::replace(&mut self.buf, mem::uninitialized());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                               |
[INFO] [stderr]     |                                               this code causes undefined behavior when executed
[INFO] [stderr]     |                                               help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr]     = note: `Box` must be non-null
[INFO] [stderr] 
[INFO] [stderr] warning: the type `std::boxed::Box<[u8]>` does not permit being left uninitialized
[INFO] [stderr]    --> src/write.rs:159:47
[INFO] [stderr]     |
[INFO] [stderr] 159 |         let buf = mem::replace(&mut self.buf, mem::uninitialized());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                               |
[INFO] [stderr]     |                                               this code causes undefined behavior when executed
[INFO] [stderr]     |                                               help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Box` must be non-null
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `rem` is never read
[INFO] [stderr]    --> src/write.rs:295:17
[INFO] [stderr]     |
[INFO] [stderr] 295 |                 rem -= n_write;
[INFO] [stderr]     |                 ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | #![feature(conservative_impl_trait)]
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the type `std::boxed::Box<[u8]>` does not permit being left uninitialized
[INFO] [stderr]    --> src/read.rs:212:47
[INFO] [stderr]     |
[INFO] [stderr] 212 |         let buf = mem::replace(&mut self.buf, mem::uninitialized());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                               |
[INFO] [stderr]     |                                               this code causes undefined behavior when executed
[INFO] [stderr]     |                                               help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr]     = note: `Box` must be non-null
[INFO] [stderr] 
[INFO] [stderr] warning: the type `std::boxed::Box<[u8]>` does not permit being left uninitialized
[INFO] [stderr]    --> src/write.rs:159:47
[INFO] [stderr]     |
[INFO] [stderr] 159 |         let buf = mem::replace(&mut self.buf, mem::uninitialized());
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                                               |
[INFO] [stderr]     |                                               this code causes undefined behavior when executed
[INFO] [stderr]     |                                               help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Box` must be non-null
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `"docker" "inspect" "19e1f881085bb9a0fd88ef0549619398116bfd421fe41202ef6c589995a27606"`
[INFO] running `"docker" "rm" "-f" "19e1f881085bb9a0fd88ef0549619398116bfd421fe41202ef6c589995a27606"`
[INFO] [stdout] 19e1f881085bb9a0fd88ef0549619398116bfd421fe41202ef6c589995a27606