[INFO] cloning repository https://github.com/wzhd/ustcp [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wzhd/ustcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwzhd%2Fustcp", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwzhd%2Fustcp'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 915bda49ce7fd7f9ba9e265aa53aa235fabf895e [INFO] checking wzhd/ustcp against try#32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d for pr-83312 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwzhd%2Fustcp" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/wzhd/ustcp on toolchain 32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/wzhd/ustcp [INFO] finished tweaking git repo https://github.com/wzhd/ustcp [INFO] tweaked toml for git repo https://github.com/wzhd/ustcp written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/wzhd/ustcp already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating git repository `https://github.com/wzhd/trilock.git` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded managed v0.7.1 [INFO] [stderr] Downloaded smallvec v1.4.0 [INFO] [stderr] Downloaded argh v0.1.3 [INFO] [stderr] Downloaded env_logger v0.5.13 [INFO] [stderr] Downloaded pin-project v0.4.9 [INFO] [stderr] Downloaded tracing-subscriber v0.2.5 [INFO] [stderr] Downloaded doc-comment v0.3.3 [INFO] [stderr] Downloaded snafu-derive v0.6.6 [INFO] [stderr] Downloaded snafu v0.6.6 [INFO] [stderr] Downloaded argh_derive v0.1.1 [INFO] [stderr] Downloaded argh_shared v0.1.1 [INFO] [stderr] Downloaded tokio v0.2.19 [INFO] [stderr] Downloaded regex v1.3.7 [INFO] [stderr] Downloaded backtrace-sys v0.1.36 [INFO] [stderr] Downloaded pin-project-internal v0.4.9 [INFO] [stderr] Downloaded serde_json v1.0.52 [INFO] [stderr] Downloaded ioctl-sys v0.5.2 [INFO] [stderr] Downloaded tokio-fd v0.1.0 [INFO] [stderr] Downloaded tun v0.4.4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1758ae8184fd2bfe5edb38a95be42ffa3b75d9a9943c0e3418422094c88b85db [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" "1758ae8184fd2bfe5edb38a95be42ffa3b75d9a9943c0e3418422094c88b85db", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1758ae8184fd2bfe5edb38a95be42ffa3b75d9a9943c0e3418422094c88b85db", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1758ae8184fd2bfe5edb38a95be42ffa3b75d9a9943c0e3418422094c88b85db", kill_on_drop: false }` [INFO] [stdout] 1758ae8184fd2bfe5edb38a95be42ffa3b75d9a9943c0e3418422094c88b85db [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 90c2c7368908ffbd53c9342ffd16eef1854c4ad62523e5c5e6641174c97c49c4 [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" "90c2c7368908ffbd53c9342ffd16eef1854c4ad62523e5c5e6641174c97c49c4", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.69 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling proc-macro2 v1.0.10 [INFO] [stderr] Compiling syn v1.0.18 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Checking smallvec v1.4.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking termcolor v1.1.0 [INFO] [stderr] Checking managed v0.7.1 [INFO] [stderr] Checking matches v0.1.8 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Checking futures-core v0.3.4 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling proc-macro-nested v0.1.4 [INFO] [stderr] Checking futures-sink v0.3.4 [INFO] [stderr] Compiling proc-macro-hack v0.5.15 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Compiling ryu v1.0.4 [INFO] [stderr] Checking futures-io v0.3.4 [INFO] [stderr] Checking futures-task v0.3.4 [INFO] [stderr] Checking ioctl-sys v0.5.2 [INFO] [stderr] Checking itoa v0.4.5 [INFO] [stderr] Checking trilock v0.1.0 (https://github.com/wzhd/trilock.git#dc5b657f) [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Compiling backtrace-sys v0.1.36 [INFO] [stderr] Checking unicode-bidi v0.3.4 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Checking tracing-core v0.1.10 [INFO] [stderr] Checking sharded-slab v0.0.9 [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking futures-channel v0.3.4 [INFO] [stderr] Checking unicode-normalization v0.1.12 [INFO] [stderr] Checking log v0.4.8 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Checking serde_json v1.0.52 [INFO] [stderr] Checking tracing-serde v0.1.1 [INFO] [stderr] Checking tracing-log v0.1.1 [INFO] [stderr] Checking aho-corasick v0.7.10 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Compiling quote v1.0.3 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking smoltcp v0.6.0 (/opt/rustwide/workdir/ustcp) [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking time v0.1.43 [INFO] [stderr] Checking backtrace v0.3.46 [INFO] [stderr] Checking mio v0.6.21 [INFO] [stderr] Checking regex v1.3.7 [INFO] [stderr] Checking error-chain v0.11.0 [INFO] [stderr] Checking matchers v0.0.1 [INFO] [stdout] warning: unknown `doc` attribute `shown` [INFO] [stdout] --> ustcp/src/macros.rs:36:26 [INFO] [stdout] | [INFO] [stdout] 36 | $( #[doc(shown)] $variant = $value ),+ [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: ustcp/src/wire/ethernet.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | / enum_with_unknown! { [INFO] [stdout] 7 | | /// Ethernet protocol type. [INFO] [stdout] 8 | | pub enum EtherType(u16) { [INFO] [stdout] 9 | | Ipv4 = 0x0800, [INFO] [stdout] ... | [INFO] [stdout] 12 | | } [INFO] [stdout] 13 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(invalid_doc_attributes)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #82730 [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unknown `doc` attribute `shown` [INFO] [stdout] --> ustcp/src/macros.rs:36:26 [INFO] [stdout] | [INFO] [stdout] 36 | $( #[doc(shown)] $variant = $value ),+ [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: ustcp/src/wire/ethernet.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | / enum_with_unknown! { [INFO] [stdout] 7 | | /// Ethernet protocol type. [INFO] [stdout] 8 | | pub enum EtherType(u16) { [INFO] [stdout] 9 | | Ipv4 = 0x0800, [INFO] [stdout] ... | [INFO] [stdout] 12 | | } [INFO] [stdout] 13 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #82730 [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unknown `doc` attribute `shown` [INFO] [stdout] --> ustcp/src/macros.rs:36:26 [INFO] [stdout] | [INFO] [stdout] 36 | $( #[doc(shown)] $variant = $value ),+ [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: ustcp/src/wire/arp.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | / enum_with_unknown! { [INFO] [stdout] 9 | | /// ARP hardware type. [INFO] [stdout] 10 | | pub enum Hardware(u16) { [INFO] [stdout] 11 | | Ethernet = 1 [INFO] [stdout] 12 | | } [INFO] [stdout] 13 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #82730 [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unknown `doc` attribute `shown` [INFO] [stdout] --> ustcp/src/macros.rs:36:26 [INFO] [stdout] | [INFO] [stdout] 36 | $( #[doc(shown)] $variant = $value ),+ [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: ustcp/src/wire/arp.rs:15:1 [INFO] [stdout] | [INFO] [stdout] 15 | / enum_with_unknown! { [INFO] [stdout] 16 | | /// ARP operation type. [INFO] [stdout] 17 | | pub enum Operation(u16) { [INFO] [stdout] 18 | | Request = 1, [INFO] [stdout] 19 | | Reply = 2 [INFO] [stdout] 20 | | } [INFO] [stdout] 21 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #82730 [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unknown `doc` attribute `shown` [INFO] [stdout] --> ustcp/src/macros.rs:36:26 [INFO] [stdout] | [INFO] [stdout] 36 | $( #[doc(shown)] $variant = $value ),+ [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: ustcp/src/wire/ip.rs:52:1 [INFO] [stdout] | [INFO] [stdout] 52 | / enum_with_unknown! { [INFO] [stdout] 53 | | /// IP datagram encapsulated protocol. [INFO] [stdout] 54 | | pub enum Protocol(u8) { [INFO] [stdout] 55 | | HopByHop = 0x00, [INFO] [stdout] ... | [INFO] [stdout] 65 | | } [INFO] [stdout] 66 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #82730 [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking tun v0.4.4 [INFO] [stderr] Checking chrono v0.4.11 [INFO] [stderr] Checking env_logger v0.5.13 [INFO] [stderr] Checking env_logger v0.7.1 [INFO] [stderr] Checking tracing-subscriber v0.2.5 [INFO] [stderr] Checking pretty_env_logger v0.4.0 [INFO] [stdout] error: unused return value of `core::mem::replace` that must be used [INFO] [stdout] --> ustcp/src/iface/neighbor.rs:107:21 [INFO] [stdout] | [INFO] [stdout] 107 | mem::replace(map, new_btree_map); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> ustcp/src/lib.rs:4:98 [INFO] [stdout] | [INFO] [stdout] 4 | #![cfg_attr(all(any(feature = "proto-ipv4", feature = "proto-ipv6"), feature = "ethernet"), deny(unused))] [INFO] [stdout] | ^^^^^^ [INFO] [stdout] = note: `#[deny(unused_must_use)]` implied by `#[deny(unused)]` [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `smoltcp` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unknown `doc` attribute `shown` [INFO] [stdout] --> ustcp/src/macros.rs:36:26 [INFO] [stdout] | [INFO] [stdout] 36 | $( #[doc(shown)] $variant = $value ),+ [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: ustcp/src/wire/ethernet.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | / enum_with_unknown! { [INFO] [stdout] 7 | | /// Ethernet protocol type. [INFO] [stdout] 8 | | pub enum EtherType(u16) { [INFO] [stdout] 9 | | Ipv4 = 0x0800, [INFO] [stdout] ... | [INFO] [stdout] 12 | | } [INFO] [stdout] 13 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(invalid_doc_attributes)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #82730 [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unknown `doc` attribute `shown` [INFO] [stdout] --> ustcp/src/macros.rs:36:26 [INFO] [stdout] | [INFO] [stdout] 36 | $( #[doc(shown)] $variant = $value ),+ [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: ustcp/src/wire/ethernet.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | / enum_with_unknown! { [INFO] [stdout] 7 | | /// Ethernet protocol type. [INFO] [stdout] 8 | | pub enum EtherType(u16) { [INFO] [stdout] 9 | | Ipv4 = 0x0800, [INFO] [stdout] ... | [INFO] [stdout] 12 | | } [INFO] [stdout] 13 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #82730 [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unknown `doc` attribute `shown` [INFO] [stdout] --> ustcp/src/macros.rs:36:26 [INFO] [stdout] | [INFO] [stdout] 36 | $( #[doc(shown)] $variant = $value ),+ [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: ustcp/src/wire/arp.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | / enum_with_unknown! { [INFO] [stdout] 9 | | /// ARP hardware type. [INFO] [stdout] 10 | | pub enum Hardware(u16) { [INFO] [stdout] 11 | | Ethernet = 1 [INFO] [stdout] 12 | | } [INFO] [stdout] 13 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #82730 [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unknown `doc` attribute `shown` [INFO] [stdout] --> ustcp/src/macros.rs:36:26 [INFO] [stdout] | [INFO] [stdout] 36 | $( #[doc(shown)] $variant = $value ),+ [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: ustcp/src/wire/arp.rs:15:1 [INFO] [stdout] | [INFO] [stdout] 15 | / enum_with_unknown! { [INFO] [stdout] 16 | | /// ARP operation type. [INFO] [stdout] 17 | | pub enum Operation(u16) { [INFO] [stdout] 18 | | Request = 1, [INFO] [stdout] 19 | | Reply = 2 [INFO] [stdout] 20 | | } [INFO] [stdout] 21 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #82730 [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unknown `doc` attribute `shown` [INFO] [stdout] --> ustcp/src/macros.rs:36:26 [INFO] [stdout] | [INFO] [stdout] 36 | $( #[doc(shown)] $variant = $value ),+ [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: ustcp/src/wire/ip.rs:52:1 [INFO] [stdout] | [INFO] [stdout] 52 | / enum_with_unknown! { [INFO] [stdout] 53 | | /// IP datagram encapsulated protocol. [INFO] [stdout] 54 | | pub enum Protocol(u8) { [INFO] [stdout] 55 | | HopByHop = 0x00, [INFO] [stdout] ... | [INFO] [stdout] 65 | | } [INFO] [stdout] 66 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #82730 [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unused return value of `core::mem::replace` that must be used [INFO] [stdout] --> ustcp/src/iface/neighbor.rs:107:21 [INFO] [stdout] | [INFO] [stdout] 107 | mem::replace(map, new_btree_map); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> ustcp/src/lib.rs:4:98 [INFO] [stdout] | [INFO] [stdout] 4 | #![cfg_attr(all(any(feature = "proto-ipv4", feature = "proto-ipv6"), feature = "ethernet"), deny(unused))] [INFO] [stdout] | ^^^^^^ [INFO] [stdout] = note: `#[deny(unused_must_use)]` implied by `#[deny(unused)]` [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "90c2c7368908ffbd53c9342ffd16eef1854c4ad62523e5c5e6641174c97c49c4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "90c2c7368908ffbd53c9342ffd16eef1854c4ad62523e5c5e6641174c97c49c4", kill_on_drop: false }` [INFO] [stdout] 90c2c7368908ffbd53c9342ffd16eef1854c4ad62523e5c5e6641174c97c49c4