[INFO] fetching crate buf_redux 0.8.4...
[INFO] checking buf_redux-0.8.4 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate buf_redux 0.8.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate buf_redux 0.8.4 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buf_redux 0.8.4
[INFO] finished tweaking crates.io crate buf_redux 0.8.4
[INFO] tweaked toml for crates.io crate buf_redux 0.8.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d43e8263ee2e3f77b3ac179c8e0ae60c78701316b0ceb768bebdb086302f3de4
[INFO] running `Command { std: "docker" "start" "-a" "d43e8263ee2e3f77b3ac179c8e0ae60c78701316b0ceb768bebdb086302f3de4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d43e8263ee2e3f77b3ac179c8e0ae60c78701316b0ceb768bebdb086302f3de4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d43e8263ee2e3f77b3ac179c8e0ae60c78701316b0ceb768bebdb086302f3de4", kill_on_drop: false }`
[INFO] [stdout] d43e8263ee2e3f77b3ac179c8e0ae60c78701316b0ceb768bebdb086302f3de4
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 908161178bf844a5ec8d729de89eae0e894e0e1d0c2753e98bb6d4ed75396dc8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "908161178bf844a5ec8d729de89eae0e894e0e1d0c2753e98bb6d4ed75396dc8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking slice-deque v0.2.4
[INFO] [stderr]     Checking buf_redux v0.8.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:373:45
[INFO] [stdout]     |
[INFO] [stdout] 373 |     pub fn boxed<'a>(self) -> BufReader<Box<Read + 'a>, P> where R: 'a {
[INFO] [stdout]     |                                             ^^^^^^^^^ help: use `dyn`: `dyn Read + 'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:374:24
[INFO] [stdout]     |
[INFO] [stdout] 374 |         let inner: Box<Read + 'a> = Box::new(self.inner);
[INFO] [stdout]     |                        ^^^^^^^^^ help: use `dyn`: `dyn Read + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:871:32
[INFO] [stdout]     |
[INFO] [stdout] 871 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1273:42
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Write, &mut Buffer, io::Error)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1273:50
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                                  ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1286:18
[INFO] [stdout]      |
[INFO] [stdout] 1286 | where F: Fn(&mut Write, &mut Buffer, io::Error)
[INFO] [stdout]      |                  ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:868:9
[INFO] [stdout]     |
[INFO] [stdout] 868 |         error::Error::description(self.error())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:373:45
[INFO] [stdout]     |
[INFO] [stdout] 373 |     pub fn boxed<'a>(self) -> BufReader<Box<Read + 'a>, P> where R: 'a {
[INFO] [stdout]     |                                             ^^^^^^^^^ help: use `dyn`: `dyn Read + 'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:374:24
[INFO] [stdout]     |
[INFO] [stdout] 374 |         let inner: Box<Read + 'a> = Box::new(self.inner);
[INFO] [stdout]     |                        ^^^^^^^^^ help: use `dyn`: `dyn Read + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:871:32
[INFO] [stdout]     |
[INFO] [stdout] 871 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1273:42
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Write, &mut Buffer, io::Error)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1273:50
[INFO] [stdout]      |
[INFO] [stdout] 1273 |     static DROP_ERR_HANDLER: RefCell<Box<Fn(&mut Write, &mut Buffer, io::Error)>>
[INFO] [stdout]      |                                                  ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:1286:18
[INFO] [stdout]      |
[INFO] [stdout] 1286 | where F: Fn(&mut Write, &mut Buffer, io::Error)
[INFO] [stdout]      |                  ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:868:9
[INFO] [stdout]     |
[INFO] [stdout] 868 |         error::Error::description(self.error())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/lib.rs:1050:17
[INFO] [stdout]      |
[INFO] [stdout] 1050 |             let mut buf = unsafe { self.buf.write_buf() };
[INFO] [stdout]      |                 ----^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/lib.rs:1068:17
[INFO] [stdout]      |
[INFO] [stdout] 1068 |             let mut buf = self.buf.write_buf();
[INFO] [stdout]      |                 ----^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/lib.rs:1050:17
[INFO] [stdout]      |
[INFO] [stdout] 1050 |             let mut buf = unsafe { self.buf.write_buf() };
[INFO] [stdout]      |                 ----^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/lib.rs:1068:17
[INFO] [stdout]      |
[INFO] [stdout] 1068 |             let mut buf = self.buf.write_buf();
[INFO] [stdout]      |                 ----^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `Command { std: "docker" "inspect" "908161178bf844a5ec8d729de89eae0e894e0e1d0c2753e98bb6d4ed75396dc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "908161178bf844a5ec8d729de89eae0e894e0e1d0c2753e98bb6d4ed75396dc8", kill_on_drop: false }`
[INFO] [stdout] 908161178bf844a5ec8d729de89eae0e894e0e1d0c2753e98bb6d4ed75396dc8