[INFO] fetching crate smoltcp 0.6.0... [INFO] checking smoltcp-0.6.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526 [INFO] extracting crate smoltcp 0.6.0 into /workspace/builds/worker-7/source [INFO] validating manifest of crates.io crate smoltcp 0.6.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate smoltcp 0.6.0 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate smoltcp 0.6.0 [INFO] tweaked toml for crates.io crate smoltcp 0.6.0 written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate crates.io crate smoltcp 0.6.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded getopts v0.2.19 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 7f0b9d1d866335c4b629fa9c6d9590d58c722a301870b2cab7c74e67434629ce [INFO] running `Command { std: "docker" "start" "-a" "7f0b9d1d866335c4b629fa9c6d9590d58c722a301870b2cab7c74e67434629ce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7f0b9d1d866335c4b629fa9c6d9590d58c722a301870b2cab7c74e67434629ce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7f0b9d1d866335c4b629fa9c6d9590d58c722a301870b2cab7c74e67434629ce", kill_on_drop: false }` [INFO] [stdout] 7f0b9d1d866335c4b629fa9c6d9590d58c722a301870b2cab7c74e67434629ce [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ba973852938dbfd326c9cf0a9afc9eeb72ff1cafcbf4431b857f792046408065 [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" "ba973852938dbfd326c9cf0a9afc9eeb72ff1cafcbf4431b857f792046408065", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.60 [INFO] [stderr] Compiling log v0.4.7 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Checking ucd-util v0.1.5 [INFO] [stderr] Checking matches v0.1.8 [INFO] [stderr] Compiling bitflags v1.1.0 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Checking smallvec v0.6.10 [INFO] [stderr] Checking utf8-ranges v1.0.3 [INFO] [stderr] Checking percent-encoding v1.0.1 [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Checking managed v0.7.1 [INFO] [stderr] Checking humantime v1.2.0 [INFO] [stderr] Checking aho-corasick v0.7.4 [INFO] [stderr] Checking unicode-bidi v0.3.4 [INFO] [stderr] Checking getopts v0.2.19 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking regex-syntax v0.6.10 [INFO] [stderr] Checking unicode-normalization v0.1.8 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking atty v0.2.13 [INFO] [stderr] Checking smoltcp v0.6.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking idna v0.1.5 [INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> src/phy/sys/mod.rs:29:27 [INFO] [stdout] | [INFO] [stdout] 29 | let mut readfds = mem::uninitialized::(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> src/phy/sys/mod.rs:33:28 [INFO] [stdout] | [INFO] [stdout] 33 | let mut writefds = mem::uninitialized::(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> src/phy/sys/mod.rs:36:29 [INFO] [stdout] | [INFO] [stdout] 36 | let mut exceptfds = mem::uninitialized::(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Checking regex v1.2.0 [INFO] [stderr] Checking env_logger v0.5.13 [INFO] [stdout] error: unused return value of `core::mem::replace` that must be used [INFO] [stdout] --> 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] --> 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; 3 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: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> src/phy/sys/mod.rs:29:27 [INFO] [stdout] | [INFO] [stdout] 29 | let mut readfds = mem::uninitialized::(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> src/phy/sys/mod.rs:33:28 [INFO] [stdout] | [INFO] [stdout] 33 | let mut writefds = mem::uninitialized::(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead [INFO] [stdout] --> src/phy/sys/mod.rs:36:29 [INFO] [stdout] | [INFO] [stdout] 36 | let mut exceptfds = mem::uninitialized::(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unused return value of `core::mem::replace` that must be used [INFO] [stdout] --> 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] --> 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; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "ba973852938dbfd326c9cf0a9afc9eeb72ff1cafcbf4431b857f792046408065", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ba973852938dbfd326c9cf0a9afc9eeb72ff1cafcbf4431b857f792046408065", kill_on_drop: false }` [INFO] [stdout] ba973852938dbfd326c9cf0a9afc9eeb72ff1cafcbf4431b857f792046408065