[INFO] fetching crate mio-pool 0.5.7...
[INFO] checking mio-pool-0.5.7 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate mio-pool 0.5.7 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mio-pool 0.5.7 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mio-pool 0.5.7
[INFO] finished tweaking crates.io crate mio-pool 0.5.7
[INFO] tweaked toml for crates.io crate mio-pool 0.5.7 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nix v0.12.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 179a8459ee22d26374c8dcccefd06b53ff216ab6858c6b58dd00f3fa2aa6f27b
[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" "179a8459ee22d26374c8dcccefd06b53ff216ab6858c6b58dd00f3fa2aa6f27b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "179a8459ee22d26374c8dcccefd06b53ff216ab6858c6b58dd00f3fa2aa6f27b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "179a8459ee22d26374c8dcccefd06b53ff216ab6858c6b58dd00f3fa2aa6f27b", kill_on_drop: false }`
[INFO] [stdout] 179a8459ee22d26374c8dcccefd06b53ff216ab6858c6b58dd00f3fa2aa6f27b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d43b14f125735860e3c9a3a470e6136bce38dc096ec7bd6419e5b9634568ee8
[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" "9d43b14f125735860e3c9a3a470e6136bce38dc096ec7bd6419e5b9634568ee8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.12.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking mio-pool v0.5.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/poll.rs:178:26
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn ctl(&self, file: &AsRawFd, t: Token, op: epoll::EpollOp) -> io::Result<()> {
[INFO] [stdout]     |                          ^^^^^^^ help: use `dyn`: `dyn AsRawFd`
[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/poll.rs:198:35
[INFO] [stdout]     |
[INFO] [stdout] 198 |     pub fn register(&self, file: &AsRawFd, t: Token) -> io::Result<()> {
[INFO] [stdout]     |                                   ^^^^^^^ help: use `dyn`: `dyn AsRawFd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/poll.rs:214:37
[INFO] [stdout]     |
[INFO] [stdout] 214 |     pub fn reregister(&self, file: &AsRawFd, t: Token) -> io::Result<()> {
[INFO] [stdout]     |                                     ^^^^^^^ help: use `dyn`: `dyn AsRawFd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/poll.rs:222:37
[INFO] [stdout]     |
[INFO] [stdout] 222 |     pub fn deregister(&self, file: &AsRawFd) -> io::Result<()> {
[INFO] [stdout]     |                                     ^^^^^^^ help: use `dyn`: `dyn AsRawFd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builder.rs:70:29
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub(super) adapter: Arc<Fn(L::Connection) -> C + 'static + Send + Sync>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(L::Connection) -> C + 'static + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/poll.rs:178:26
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn ctl(&self, file: &AsRawFd, t: Token, op: epoll::EpollOp) -> io::Result<()> {
[INFO] [stdout]     |                          ^^^^^^^ help: use `dyn`: `dyn AsRawFd`
[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/builder.rs:71:31
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub(super) finalizer: Arc<Fn(S) -> R + Send + Sync + 'static>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(S) -> R + Send + Sync + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/poll.rs:198:35
[INFO] [stdout]     |
[INFO] [stdout] 198 |     pub fn register(&self, file: &AsRawFd, t: Token) -> io::Result<()> {
[INFO] [stdout]     |                                   ^^^^^^^ help: use `dyn`: `dyn AsRawFd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/poll.rs:214:37
[INFO] [stdout]     |
[INFO] [stdout] 214 |     pub fn reregister(&self, file: &AsRawFd, t: Token) -> io::Result<()> {
[INFO] [stdout]     |                                     ^^^^^^^ help: use `dyn`: `dyn AsRawFd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/poll.rs:222:37
[INFO] [stdout]     |
[INFO] [stdout] 222 |     pub fn deregister(&self, file: &AsRawFd) -> io::Result<()> {
[INFO] [stdout]     |                                     ^^^^^^^ help: use `dyn`: `dyn AsRawFd`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builder.rs:70:29
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub(super) adapter: Arc<Fn(L::Connection) -> C + 'static + Send + Sync>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(L::Connection) -> C + 'static + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builder.rs:71:31
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub(super) finalizer: Arc<Fn(S) -> R + Send + Sync + 'static>,
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(S) -> R + Send + Sync + 'static`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> tests/lib.rs:164:39
[INFO] [stdout]     |
[INFO] [stdout] 164 |         r.write_all(&[0x00]).unwrap();;
[INFO] [stdout]     |                                       ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.46s
[INFO] running `Command { std: "docker" "inspect" "9d43b14f125735860e3c9a3a470e6136bce38dc096ec7bd6419e5b9634568ee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d43b14f125735860e3c9a3a470e6136bce38dc096ec7bd6419e5b9634568ee8", kill_on_drop: false }`
[INFO] [stdout] 9d43b14f125735860e3c9a3a470e6136bce38dc096ec7bd6419e5b9634568ee8