[INFO] fetching crate skiplist 0.3.0... [INFO] testing skiplist-0.3.0 against 1.47.0 for beta-1.48-2-subset [INFO] extracting crate skiplist 0.3.0 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate skiplist 0.3.0 on toolchain 1.47.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate skiplist 0.3.0 [INFO] finished tweaking crates.io crate skiplist 0.3.0 [INFO] tweaked toml for crates.io crate skiplist 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c97e48bf9d36d9398f0b5fffbbbf2b20dd0f1824580166dd6d165793a7677d5a [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" "c97e48bf9d36d9398f0b5fffbbbf2b20dd0f1824580166dd6d165793a7677d5a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c97e48bf9d36d9398f0b5fffbbbf2b20dd0f1824580166dd6d165793a7677d5a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c97e48bf9d36d9398f0b5fffbbbf2b20dd0f1824580166dd6d165793a7677d5a", kill_on_drop: false }` [INFO] [stdout] c97e48bf9d36d9398f0b5fffbbbf2b20dd0f1824580166dd6d165793a7677d5a [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=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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e23474130b9ae89f75fefe51a7f1d09ed5a8a23657fc27431fb386de75a0f722 [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" "e23474130b9ae89f75fefe51a7f1d09ed5a8a23657fc27431fb386de75a0f722", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.79 [INFO] [stderr] Compiling getrandom v0.1.15 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling ppv-lite86 v0.2.9 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling rand_pcg v0.2.1 [INFO] [stderr] Compiling rand_chacha v0.2.2 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling skiplist v0.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:249:17 [INFO] [stdout] | [INFO] [stdout] 249 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:254:9 [INFO] [stdout] | [INFO] [stdout] 254 | mem::replace(&mut self.head, new_head); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:882:21 [INFO] [stdout] | [INFO] [stdout] 882 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:961:21 [INFO] [stdout] | [INFO] [stdout] 961 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:1397:17 [INFO] [stdout] | [INFO] [stdout] 1397 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:95:17 [INFO] [stdout] | [INFO] [stdout] 95 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:100:9 [INFO] [stdout] | [INFO] [stdout] 100 | mem::replace(&mut self.head, new_head); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:583:21 [INFO] [stdout] | [INFO] [stdout] 583 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:886:21 [INFO] [stdout] | [INFO] [stdout] 886 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:1120:17 [INFO] [stdout] | [INFO] [stdout] 1120 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skipmap.rs:309:17 [INFO] [stdout] | [INFO] [stdout] 309 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skipmap.rs:314:9 [INFO] [stdout] | [INFO] [stdout] 314 | mem::replace(&mut self.head, new_head); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skipmap.rs:1293:17 [INFO] [stdout] | [INFO] [stdout] 1293 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 8.25s [INFO] running `Command { std: "docker" "inspect" "e23474130b9ae89f75fefe51a7f1d09ed5a8a23657fc27431fb386de75a0f722", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e23474130b9ae89f75fefe51a7f1d09ed5a8a23657fc27431fb386de75a0f722", kill_on_drop: false }` [INFO] [stdout] e23474130b9ae89f75fefe51a7f1d09ed5a8a23657fc27431fb386de75a0f722 [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=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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2230444470f63595b07ee43ab0cb6339d65c52620d760ea714a3d5b6d88efb22 [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" "2230444470f63595b07ee43ab0cb6339d65c52620d760ea714a3d5b6d88efb22", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling serde v1.0.117 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling rayon-core v1.8.1 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Compiling serde_json v1.0.59 [INFO] [stderr] Compiling itoa v0.4.6 [INFO] [stderr] Compiling syn v1.0.45 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling serde_derive v1.0.117 [INFO] [stderr] Compiling regex-syntax v0.6.20 [INFO] [stderr] Compiling half v1.6.0 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling oorandom v11.1.2 [INFO] [stderr] Compiling itertools v0.9.0 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling walkdir v2.3.1 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling num-traits v0.2.12 [INFO] [stderr] Compiling rayon v1.4.1 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling clap v2.33.3 [INFO] [stderr] Compiling csv-core v0.1.10 [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:249:17 [INFO] [stdout] | [INFO] [stdout] 249 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:254:9 [INFO] [stdout] | [INFO] [stdout] 254 | mem::replace(&mut self.head, new_head); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:882:21 [INFO] [stdout] | [INFO] [stdout] 882 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:961:21 [INFO] [stdout] | [INFO] [stdout] 961 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:1397:17 [INFO] [stdout] | [INFO] [stdout] 1397 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:95:17 [INFO] [stdout] | [INFO] [stdout] 95 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:100:9 [INFO] [stdout] | [INFO] [stdout] 100 | mem::replace(&mut self.head, new_head); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:583:21 [INFO] [stdout] | [INFO] [stdout] 583 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:886:21 [INFO] [stdout] | [INFO] [stdout] 886 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:1120:17 [INFO] [stdout] | [INFO] [stdout] 1120 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skipmap.rs:309:17 [INFO] [stdout] | [INFO] [stdout] 309 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skipmap.rs:314:9 [INFO] [stdout] | [INFO] [stdout] 314 | mem::replace(&mut self.head, new_head); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skipmap.rs:1293:17 [INFO] [stdout] | [INFO] [stdout] 1293 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Compiling regex-automata v0.1.9 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Compiling crossbeam-channel v0.4.4 [INFO] [stderr] Compiling regex v1.4.1 [INFO] [stderr] Compiling criterion-plot v0.4.3 [INFO] [stderr] Compiling crossbeam-deque v0.7.3 [INFO] [stderr] Compiling plotters v0.2.15 [INFO] [stderr] Compiling bstr v0.2.14 [INFO] [stderr] Compiling serde_cbor v0.11.1 [INFO] [stderr] Compiling csv v1.1.3 [INFO] [stderr] Compiling tinytemplate v1.1.0 [INFO] [stderr] Compiling criterion v0.3.3 [INFO] [stderr] Compiling skiplist v0.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:249:17 [INFO] [stdout] | [INFO] [stdout] 249 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:254:9 [INFO] [stdout] | [INFO] [stdout] 254 | mem::replace(&mut self.head, new_head); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:882:21 [INFO] [stdout] | [INFO] [stdout] 882 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:961:21 [INFO] [stdout] | [INFO] [stdout] 961 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/ordered_skiplist.rs:1397:17 [INFO] [stdout] | [INFO] [stdout] 1397 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:95:17 [INFO] [stdout] | [INFO] [stdout] 95 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:100:9 [INFO] [stdout] | [INFO] [stdout] 100 | mem::replace(&mut self.head, new_head); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:583:21 [INFO] [stdout] | [INFO] [stdout] 583 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:886:21 [INFO] [stdout] | [INFO] [stdout] 886 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skiplist.rs:1120:17 [INFO] [stdout] | [INFO] [stdout] 1120 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skipmap.rs:309:17 [INFO] [stdout] | [INFO] [stdout] 309 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skipmap.rs:314:9 [INFO] [stdout] | [INFO] [stdout] 314 | mem::replace(&mut self.head, new_head); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/skipmap.rs:1293:17 [INFO] [stdout] | [INFO] [stdout] 1293 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1m 33s [INFO] running `Command { std: "docker" "inspect" "2230444470f63595b07ee43ab0cb6339d65c52620d760ea714a3d5b6d88efb22", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2230444470f63595b07ee43ab0cb6339d65c52620d760ea714a3d5b6d88efb22", kill_on_drop: false }` [INFO] [stdout] 2230444470f63595b07ee43ab0cb6339d65c52620d760ea714a3d5b6d88efb22 [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=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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 7e9bf784959f2bf612fd1873d60d4cd128489faa70c7f3f2efef27bb3e5a75f3 [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" "7e9bf784959f2bf612fd1873d60d4cd128489faa70c7f3f2efef27bb3e5a75f3", kill_on_drop: false }` [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/ordered_skiplist.rs:249:17 [INFO] [stderr] | [INFO] [stderr] 249 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/ordered_skiplist.rs:254:9 [INFO] [stderr] | [INFO] [stderr] 254 | mem::replace(&mut self.head, new_head); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/ordered_skiplist.rs:882:21 [INFO] [stderr] | [INFO] [stderr] 882 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/ordered_skiplist.rs:961:21 [INFO] [stderr] | [INFO] [stderr] 961 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/ordered_skiplist.rs:1397:17 [INFO] [stderr] | [INFO] [stderr] 1397 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skiplist.rs:95:17 [INFO] [stderr] | [INFO] [stderr] 95 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skiplist.rs:100:9 [INFO] [stderr] | [INFO] [stderr] 100 | mem::replace(&mut self.head, new_head); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skiplist.rs:583:21 [INFO] [stderr] | [INFO] [stderr] 583 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skiplist.rs:886:21 [INFO] [stderr] | [INFO] [stderr] 886 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skiplist.rs:1120:17 [INFO] [stderr] | [INFO] [stderr] 1120 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skipmap.rs:309:17 [INFO] [stderr] | [INFO] [stderr] 309 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skipmap.rs:314:9 [INFO] [stderr] | [INFO] [stderr] 314 | mem::replace(&mut self.head, new_head); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skipmap.rs:1293:17 [INFO] [stderr] | [INFO] [stderr] 1293 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: 13 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/ordered_skiplist.rs:249:17 [INFO] [stderr] | [INFO] [stderr] 249 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/ordered_skiplist.rs:254:9 [INFO] [stderr] | [INFO] [stderr] 254 | mem::replace(&mut self.head, new_head); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/ordered_skiplist.rs:882:21 [INFO] [stderr] | [INFO] [stderr] 882 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/ordered_skiplist.rs:961:21 [INFO] [stderr] | [INFO] [stderr] 961 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/ordered_skiplist.rs:1397:17 [INFO] [stderr] | [INFO] [stderr] 1397 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skiplist.rs:95:17 [INFO] [stderr] | [INFO] [stderr] 95 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skiplist.rs:100:9 [INFO] [stderr] | [INFO] [stderr] 100 | mem::replace(&mut self.head, new_head); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skiplist.rs:583:21 [INFO] [stderr] | [INFO] [stderr] 583 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skiplist.rs:886:21 [INFO] [stderr] | [INFO] [stderr] 886 | mem::replace(&mut (*prev).next, mem::replace(&mut (*node).next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skiplist.rs:1120:17 [INFO] [stderr] | [INFO] [stderr] 1120 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skipmap.rs:309:17 [INFO] [stderr] | [INFO] [stderr] 309 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skipmap.rs:314:9 [INFO] [stderr] | [INFO] [stderr] 314 | mem::replace(&mut self.head, new_head); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/skipmap.rs:1293:17 [INFO] [stderr] | [INFO] [stderr] 1293 | mem::replace(&mut (*node).next, mem::replace(&mut next.next, None)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stderr] [INFO] [stderr] warning: 13 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.12s [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/skiplist-44f7e0490c5aa878 [INFO] [stdout] running 58 tests [INFO] [stdout] test ordered_skiplist::tests::clear ... ok [INFO] [stdout] test ordered_skiplist::tests::contains ... ok [INFO] [stdout] test level_generator::tests::new ... ok [INFO] [stdout] test ordered_skiplist::tests::equality ... ok [INFO] [stdout] test ordered_skiplist::tests::debug_display ... ok [INFO] [stdout] test ordered_skiplist::tests::basic_small ... ok [INFO] [stdout] test ordered_skiplist::tests::range_small ... ok [INFO] [stdout] test ordered_skiplist::tests::range_1000 ... ok [INFO] [stdout] test ordered_skiplist::tests::remove ... ok [INFO] [stdout] test ordered_skiplist::tests::sort_by ... ok [INFO] [stdout] test level_generator::tests::invalid_total ... ok [INFO] [stdout] test level_generator::tests::invalid_p_1 ... ok [INFO] [stdout] test ordered_skiplist::tests::with_comp ... ok [INFO] [stdout] test level_generator::tests::invalid_p_0 ... ok [INFO] [stdout] test skiplist::tests::clear ... ok [INFO] [stdout] test ordered_skiplist::tests::sort_by_panic ... ok [INFO] [stdout] test skiplist::tests::basic_small ... ok [INFO] [stdout] test ordered_skiplist::tests::index_pop ... ok [INFO] [stdout] test skiplist::tests::contains ... ok [INFO] [stdout] test skiplist::tests::equality ... ok [INFO] [stdout] test skiplist::tests::debug_display ... ok [INFO] [stdout] test skiplist::tests::inplace_mut ... ok [INFO] [stdout] test skiplist::tests::index_pop ... ok [INFO] [stdout] test skiplist::tests::iter ... ok [INFO] [stdout] test ordered_skiplist::tests::iter_rev ... ok [INFO] [stdout] test ordered_skiplist::tests::remove_index ... ok [INFO] [stdout] test ordered_skiplist::tests::iter_mixed ... ok [INFO] [stdout] test skiplist::tests::range_small ... ok [INFO] [stdout] test skiplist::tests::range_1000 ... ok [INFO] [stdout] test skiplist::tests::range_mut_1000 ... ok [INFO] [stdout] test skipmap::tests::basic_small ... ok [INFO] [stdout] test skiplist::tests::iter_mixed ... ok [INFO] [stdout] test skipmap::tests::contains ... ok [INFO] [stdout] test skipmap::tests::clear ... ok [INFO] [stdout] test skipmap::tests::debug_display ... ok [INFO] [stdout] test skipmap::tests::equality ... ok [INFO] [stdout] test skipmap::tests::insert_existing ... ok [INFO] [stdout] test ordered_skiplist::tests::iter ... ok [INFO] [stdout] test ordered_skiplist::tests::retain ... ok [INFO] [stdout] test skipmap::tests::iter_key_val ... ok [INFO] [stdout] test skiplist::tests::iter_rev ... ok [INFO] [stdout] test skipmap::tests::index_pop ... ok [INFO] [stdout] test skiplist::tests::retain ... ok [INFO] [stdout] test skipmap::tests::iter_mixed ... ok [INFO] [stdout] test skipmap::tests::range_1000 ... ok [INFO] [stdout] test skipmap::tests::range_small ... ok [INFO] [stdout] test skipmap::tests::iter_rev ... ok [INFO] [stdout] test ordered_skiplist::tests::basic_large ... ok [INFO] [stdout] test skipmap::tests::basic_large ... ok [INFO] [stdout] test skipmap::tests::iter ... ok [INFO] [stdout] test ordered_skiplist::tests::pop ... ok [INFO] [stdout] test skipmap::tests::remove_index ... ok [INFO] [stdout] test ordered_skiplist::tests::range ... ok [INFO] [stdout] test skipmap::tests::range ... ok [INFO] [stdout] test skiplist::tests::range ... ok [INFO] [stdout] test ordered_skiplist::tests::dedup ... ok [INFO] [stdout] test skiplist::tests::basic_large ... ok [INFO] [stdout] test skiplist::tests::dedup ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 58 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Doc-tests skiplist [INFO] [stdout] [INFO] [stdout] running 69 tests [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::new (line 69) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::iter (line 994) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::back (line 407) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::into_iter (line 971) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::is_empty (line 277) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::pop_front (line 456) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::contains (line 506) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::dedup (line 893) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::len (line 261) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::insert (line 295) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::clear (line 235) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::pop_back (line 481) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::front (line 383) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::get (line 432) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::remove (line 555) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::with_comp (line 146) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::range (line 1020) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::back_mut (line 340) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::remove_first (line 659) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::remove_index (line 769) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::clear (line 81) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::contains (line 791) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::with_capacity (line 102) ... ok [INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList::retain (line 827) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::dedup (line 816) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::front (line 267) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::back (line 315) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::front_mut (line 291) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::get (line 365) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::insert (line 146) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::pop_back (line 442) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::is_empty (line 123) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::new (line 38) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::get_mut (line 389) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::len (line 107) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::into_iter (line 593) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::push_front (line 235) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::iter_mut (line 638) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::iter (line 616) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::push_back (line 250) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::pop_front (line 417) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::range (line 664) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::range_mut (line 727) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::retain (line 528) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::back (line 419) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::with_capacity (line 60) ... ok [INFO] [stdout] test src/skiplist.rs - skiplist::SkipList::remove (line 471) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::back_mut (line 453) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::clear (line 295) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::contains_key (line 628) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::front (line 356) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::front_mut (line 389) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::get (line 484) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::get_mut (line 529) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::insert (line 180) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::into_iter (line 838) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::is_empty (line 337) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::iter_mut (line 886) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::iter (line 861) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::new (line 137) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::keys (line 909) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::pop_back (line 603) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::len (line 321) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::remove (line 674) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::range (line 957) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::pop_front (line 578) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::remove_index (line 784) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::values (line 931) ... ok [INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap::with_capacity (line 159) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 69 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "7e9bf784959f2bf612fd1873d60d4cd128489faa70c7f3f2efef27bb3e5a75f3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7e9bf784959f2bf612fd1873d60d4cd128489faa70c7f3f2efef27bb3e5a75f3", kill_on_drop: false }` [INFO] [stdout] 7e9bf784959f2bf612fd1873d60d4cd128489faa70c7f3f2efef27bb3e5a75f3