[INFO] fetching crate ipc 0.2.0...
[INFO] testing ipc-0.2.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate ipc 0.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ipc 0.2.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ipc 0.2.0
[INFO] finished tweaking crates.io crate ipc 0.2.0
[INFO] tweaked toml for crates.io crate ipc 0.2.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] c1f734892cc3cebfe91cdcb6b45d3b08445314bdd9996f46ac2065170d60d3aa
[INFO] running `Command { std: "docker" "start" "-a" "c1f734892cc3cebfe91cdcb6b45d3b08445314bdd9996f46ac2065170d60d3aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1f734892cc3cebfe91cdcb6b45d3b08445314bdd9996f46ac2065170d60d3aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1f734892cc3cebfe91cdcb6b45d3b08445314bdd9996f46ac2065170d60d3aa", kill_on_drop: false }`
[INFO] [stdout] c1f734892cc3cebfe91cdcb6b45d3b08445314bdd9996f46ac2065170d60d3aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", 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] f8443df323f629f9cae425aa603c94d79073552708021cb4a261e769b9d791ca
[INFO] running `Command { std: "docker" "start" "-a" "f8443df323f629f9cae425aa603c94d79073552708021cb4a261e769b9d791ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling rmp-serde v0.13.7
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling ipc v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro, conservative_impl_trait, generators)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout]   = help: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ErrorKind` is imported redundantly
[INFO] [stdout]   --> src/platform/unix/unix_sock_stream.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::io::{ Result, Error, Read, Write, ErrorKind };
[INFO] [stdout]    |                                            --------- the item `ErrorKind` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 39 |         use std::io::ErrorKind;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ErrorKind` is imported redundantly
[INFO] [stdout]    --> src/platform/unix/unix_sock_stream.rs:210:13
[INFO] [stdout]     |
[INFO] [stdout] 10  | use std::io::{ Result, Error, Read, Write, ErrorKind };
[INFO] [stdout]     |                                            --------- the item `ErrorKind` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 210 |         use std::io::ErrorKind;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ErrorKind` is imported redundantly
[INFO] [stdout]   --> src/platform/unix/unix_sock_seqpacket.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::io::{ Result, Error, Read, Write, ErrorKind };
[INFO] [stdout]    |                                            --------- the item `ErrorKind` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 39 |         use std::io::ErrorKind;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ErrorKind` is imported redundantly
[INFO] [stdout]    --> src/platform/unix/unix_sock_seqpacket.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 10  | use std::io::{ Result, Error, Read, Write, ErrorKind };
[INFO] [stdout]     |                                            --------- the item `ErrorKind` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 194 |         use std::io::ErrorKind;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:30:40
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn async_recv<'a>(&'a self) -> Box<Future<Item = Self::Item, Error = Error> + 'a>;
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 30 -     fn async_recv<'a>(&'a self) -> Box<Future<Item = Self::Item, Error = Error> + 'a>;
[INFO] [stdout] 30 +     fn async_recv<'a>(&'a self) -> Box<dyn Future<Item = Self::Item, Error = Error> + 'a>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:40:61
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<Future<Item = (), Error = Error> + 'a>;
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 40 -     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<Future<Item = (), Error = Error> + 'a>;
[INFO] [stdout] 40 +     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<dyn Future<Item = (), Error = Error> + 'a>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/platform/unix/message_queue.rs:106:61
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<Future<Item = (), Error = Error> + 'a> {
[INFO] [stdout]     |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 106 -     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<Future<Item = (), Error = Error> + 'a> {
[INFO] [stdout] 106 +     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<dyn Future<Item = (), Error = Error> + 'a> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/platform/unix/message_queue.rs:162:40
[INFO] [stdout]     |
[INFO] [stdout] 162 |     fn async_recv<'a>(&'a self) -> Box<Future<Item = Self::Item, Error = Error> + 'a> {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 162 -     fn async_recv<'a>(&'a self) -> Box<Future<Item = Self::Item, Error = Error> + 'a> {
[INFO] [stdout] 162 +     fn async_recv<'a>(&'a self) -> Box<dyn Future<Item = Self::Item, Error = Error> + 'a> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/platform/unix/unix_sock_stream.rs:131:40
[INFO] [stdout]     |
[INFO] [stdout] 131 |     fn async_recv<'a>(&'a self) -> Box<Future<Item = Self::Item, Error = Error> + 'a> {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 131 -     fn async_recv<'a>(&'a self) -> Box<Future<Item = Self::Item, Error = Error> + 'a> {
[INFO] [stdout] 131 +     fn async_recv<'a>(&'a self) -> Box<dyn Future<Item = Self::Item, Error = Error> + 'a> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/platform/unix/unix_sock_stream.rs:183:61
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<Future<Item = (), Error = Error> + 'a> { 
[INFO] [stdout]     |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 183 -     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<Future<Item = (), Error = Error> + 'a> { 
[INFO] [stdout] 183 +     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<dyn Future<Item = (), Error = Error> + 'a> { 
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/platform/unix/unix_sock_stream.rs:301:40
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn async_recv<'a>(&'a self) -> Box<Future<Item = Self::Item, Error = Error> + 'a> {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 301 -     fn async_recv<'a>(&'a self) -> Box<Future<Item = Self::Item, Error = Error> + 'a> {
[INFO] [stdout] 301 +     fn async_recv<'a>(&'a self) -> Box<dyn Future<Item = Self::Item, Error = Error> + 'a> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/platform/unix/unix_sock_stream.rs:345:61
[INFO] [stdout]     |
[INFO] [stdout] 345 |     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<Future<Item = (), Error = Error> + 'a> { 
[INFO] [stdout]     |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 345 -     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<Future<Item = (), Error = Error> + 'a> { 
[INFO] [stdout] 345 +     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<dyn Future<Item = (), Error = Error> + 'a> { 
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/platform/unix/unix_sock_seqpacket.rs:149:52
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn async_send<'a>(&'a self, to_send: T) -> Box<Future<Item = (), Error = Error> + 'a> {
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 149 -     fn async_send<'a>(&'a self, to_send: T) -> Box<Future<Item = (), Error = Error> + 'a> {
[INFO] [stdout] 149 +     fn async_send<'a>(&'a self, to_send: T) -> Box<dyn Future<Item = (), Error = Error> + 'a> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/platform/unix/unix_sock_seqpacket.rs:170:40
[INFO] [stdout]     |
[INFO] [stdout] 170 |     fn async_recv<'a>(&'a self) -> Box<Future<Item = T, Error = Error> + 'a> {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 -     fn async_recv<'a>(&'a self) -> Box<Future<Item = T, Error = Error> + 'a> {
[INFO] [stdout] 170 +     fn async_recv<'a>(&'a self) -> Box<dyn Future<Item = T, Error = Error> + 'a> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/platform/unix/unix_sock_seqpacket.rs:276:40
[INFO] [stdout]     |
[INFO] [stdout] 276 |     fn async_recv<'a>(&'a self) -> Box<Future<Item = Self::Item, Error = Error> + 'a> {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 276 -     fn async_recv<'a>(&'a self) -> Box<Future<Item = Self::Item, Error = Error> + 'a> {
[INFO] [stdout] 276 +     fn async_recv<'a>(&'a self) -> Box<dyn Future<Item = Self::Item, Error = Error> + 'a> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/platform/unix/unix_sock_seqpacket.rs:317:61
[INFO] [stdout]     |
[INFO] [stdout] 317 |     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<Future<Item = (), Error = Error> + 'a> { 
[INFO] [stdout]     |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 317 -     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<Future<Item = (), Error = Error> + 'a> { 
[INFO] [stdout] 317 +     fn async_send<'a>(&'a self, to_send: Self::Item) -> Box<dyn Future<Item = (), Error = Error> + 'a> { 
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/platform/unix/message_queue.rs:141:20
[INFO] [stdout]     |
[INFO] [stdout] 141 |         match self.read_buf(&mut buf) {
[INFO] [stdout]     |                    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `tokio_io::AsyncRead::read_buf(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/platform/unix/unix_sock_stream.rs:111:24
[INFO] [stdout]     |
[INFO] [stdout] 111 |             match self.read_buf(&mut buf) {
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `tokio_io::AsyncRead::read_buf(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/platform/unix/unix_sock_stream.rs:281:24
[INFO] [stdout]     |
[INFO] [stdout] 281 |             match self.read_buf(&mut buf) {
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `tokio_io::AsyncRead::read_buf(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/platform/unix/unix_sock_seqpacket.rs:100:24
[INFO] [stdout]     |
[INFO] [stdout] 100 |             match self.read_buf(&mut buf) {
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `tokio_io::AsyncRead::read_buf(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]    --> src/platform/unix/unix_sock_seqpacket.rs:256:24
[INFO] [stdout]     |
[INFO] [stdout] 256 |             match self.read_buf(&mut buf) {
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]     = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]     = help: call with fully qualified syntax `tokio_io::AsyncRead::read_buf(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ipc` due to 2 previous errors; 21 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f8443df323f629f9cae425aa603c94d79073552708021cb4a261e769b9d791ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8443df323f629f9cae425aa603c94d79073552708021cb4a261e769b9d791ca", kill_on_drop: false }`
[INFO] [stdout] f8443df323f629f9cae425aa603c94d79073552708021cb4a261e769b9d791ca