[INFO] crate reducer 2.0.0 is already in cache [INFO] checking reducer-2.0.0 against master#914adf04af1c1a984707f778da3d04590c03d144 for pr-72331 [INFO] extracting crate reducer 2.0.0 into /workspace/builds/worker-0/source [INFO] validating manifest of crates.io crate reducer 2.0.0 on toolchain 914adf04af1c1a984707f778da3d04590c03d144 [INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate reducer 2.0.0 [INFO] finished tweaking crates.io crate reducer 2.0.0 [INFO] tweaked toml for crates.io crate reducer 2.0.0 written to /workspace/builds/worker-0/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] f114f2784c973800653615f3cd269a8ba9d1e68f8a01ffe1795046539e8c3cb1 [INFO] running `"docker" "start" "-a" "f114f2784c973800653615f3cd269a8ba9d1e68f8a01ffe1795046539e8c3cb1"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling libc v0.2.70 [INFO] [stderr] Compiling syn v1.0.23 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking futures-core v0.3.5 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking futures-sink v0.3.5 [INFO] [stderr] Checking once_cell v1.4.0 [INFO] [stderr] Compiling rayon-core v1.7.0 [INFO] [stderr] Checking either v1.5.3 [INFO] [stderr] Checking futures-io v0.3.5 [INFO] [stderr] Checking remove_dir_all v0.5.2 [INFO] [stderr] Checking fragile v0.3.0 [INFO] [stderr] Checking downcast v0.10.0 [INFO] [stderr] Checking oorandom v11.1.1 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking futures-channel v0.3.5 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking crossbeam-utils v0.7.2 [INFO] [stderr] Checking rand_pcg v0.1.2 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Checking clap v2.33.1 [INFO] [stderr] Checking serde_json v1.0.53 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_chacha v0.1.1 [INFO] [stderr] Checking float-cmp v0.6.0 [INFO] [stderr] Checking plotters v0.2.14 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking futures-task v0.3.5 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking predicates v1.0.4 [INFO] [stderr] Checking bstr v0.2.13 [INFO] [stderr] Checking crossbeam-epoch v0.8.2 [INFO] [stderr] Checking crossbeam-queue v0.2.1 [INFO] [stderr] Checking crossbeam-deque v0.7.3 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking getrandom v0.1.14 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking wait-timeout v0.2.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking csv v1.1.3 [INFO] [stderr] Checking tinytemplate v1.0.4 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking criterion-plot v0.4.2 [INFO] [stderr] Checking rayon v1.3.0 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking tempfile v3.1.0 [INFO] [stderr] Checking rusty-fork v0.2.2 [INFO] [stderr] Checking proptest v0.9.6 [INFO] [stderr] Compiling derive_deref v1.1.0 [INFO] [stderr] Compiling derivative v1.0.4 [INFO] [stderr] Compiling pin-project-internal v0.4.17 [INFO] [stderr] Compiling futures-macro v0.3.5 [INFO] [stderr] Compiling mockall_derive v0.6.0 [INFO] [stderr] Compiling serde_derive v1.0.110 [INFO] [stderr] Checking pin-project v0.4.17 [INFO] [stderr] Checking futures-util v0.3.5 [INFO] [stderr] Checking mockall v0.6.0 [INFO] [stderr] Checking criterion v0.3.2 [INFO] [stderr] Checking futures-executor v0.3.5 [INFO] [stderr] Checking futures v0.3.5 [INFO] [stderr] Checking reducer v2.0.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/dispatcher.rs:22:5 [INFO] [stderr] | [INFO] [stderr] 22 | / mock! { [INFO] [stderr] 23 | | pub(crate) Dispatcher {} [INFO] [stderr] 24 | | trait Dispatcher { [INFO] [stderr] 25 | | type Output = O; [INFO] [stderr] 26 | | fn dispatch(&mut self, action: A) -> O; [INFO] [stderr] 27 | | } [INFO] [stderr] 28 | | } [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] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/dispatcher.rs:22:5 [INFO] [stderr] | [INFO] [stderr] 22 | / mock! { [INFO] [stderr] 23 | | pub(crate) Dispatcher {} [INFO] [stderr] 24 | | trait Dispatcher { [INFO] [stderr] 25 | | type Output = O; [INFO] [stderr] 26 | | fn dispatch(&mut self, action: A) -> O; [INFO] [stderr] 27 | | } [INFO] [stderr] 28 | | } [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] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/reactor.rs:47:5 [INFO] [stderr] | [INFO] [stderr] 47 | / mock! { [INFO] [stderr] 48 | | pub(crate) Reactor { [INFO] [stderr] 49 | | fn id(&self) -> usize; [INFO] [stderr] 50 | | } [INFO] [stderr] ... | [INFO] [stderr] 57 | | } [INFO] [stderr] 58 | | } [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] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/reducer.rs:76:5 [INFO] [stderr] | [INFO] [stderr] 76 | / mock! { [INFO] [stderr] 77 | | pub(crate) Reducer { [INFO] [stderr] 78 | | fn id(&self) -> usize; [INFO] [stderr] 79 | | } [INFO] [stderr] ... | [INFO] [stderr] 85 | | } [INFO] [stderr] 86 | | } [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] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 54s [INFO] running `"docker" "inspect" "f114f2784c973800653615f3cd269a8ba9d1e68f8a01ffe1795046539e8c3cb1"` [INFO] running `"docker" "rm" "-f" "f114f2784c973800653615f3cd269a8ba9d1e68f8a01ffe1795046539e8c3cb1"` [INFO] [stdout] f114f2784c973800653615f3cd269a8ba9d1e68f8a01ffe1795046539e8c3cb1