[INFO] fetching crate disjoint-sets 0.4.2... [INFO] testing disjoint-sets-0.4.2 against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296 [INFO] extracting crate disjoint-sets 0.4.2 into /workspace/builds/worker-9/source [INFO] validating manifest of crates.io crate disjoint-sets 0.4.2 on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate disjoint-sets 0.4.2 [INFO] finished tweaking crates.io crate disjoint-sets 0.4.2 [INFO] tweaked toml for crates.io crate disjoint-sets 0.4.2 written to /workspace/builds/worker-9/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 91c8cc44caba7c468f9a40cf2439ac63b7b171f7351a600d1ffc3c84d6f7d153 [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" "91c8cc44caba7c468f9a40cf2439ac63b7b171f7351a600d1ffc3c84d6f7d153", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "91c8cc44caba7c468f9a40cf2439ac63b7b171f7351a600d1ffc3c84d6f7d153", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "91c8cc44caba7c468f9a40cf2439ac63b7b171f7351a600d1ffc3c84d6f7d153", kill_on_drop: false }` [INFO] [stdout] 91c8cc44caba7c468f9a40cf2439ac63b7b171f7351a600d1ffc3c84d6f7d153 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3e604273da2c392414bec714a41068e9834dbfa888c87874939aca40e8152097 [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" "3e604273da2c392414bec714a41068e9834dbfa888c87874939aca40e8152097", kill_on_drop: false }` [INFO] [stderr] Compiling disjoint-sets v0.4.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/tree.rs:465:17 [INFO] [stdout] | [INFO] [stdout] 465 | / mem::replace(&mut *guard_parent, Root { [INFO] [stdout] 466 | | data: new_data, [INFO] [stdout] 467 | | rank: rank, [INFO] [stdout] 468 | | }); [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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.98s [INFO] running `Command { std: "docker" "inspect" "3e604273da2c392414bec714a41068e9834dbfa888c87874939aca40e8152097", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3e604273da2c392414bec714a41068e9834dbfa888c87874939aca40e8152097", kill_on_drop: false }` [INFO] [stdout] 3e604273da2c392414bec714a41068e9834dbfa888c87874939aca40e8152097 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f709efe4ccf6972f5df18b2880301a5ead676ad235fd3921260bd8549705a7e0 [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" "f709efe4ccf6972f5df18b2880301a5ead676ad235fd3921260bd8549705a7e0", kill_on_drop: false }` [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/tree.rs:465:17 [INFO] [stdout] | [INFO] [stdout] 465 | / mem::replace(&mut *guard_parent, Root { [INFO] [stdout] 466 | | data: new_data, [INFO] [stdout] 467 | | rank: rank, [INFO] [stdout] 468 | | }); [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] [stderr] Compiling serde v1.0.117 [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling serde_json v1.0.59 [INFO] [stderr] Compiling itoa v0.4.6 [INFO] [stderr] Compiling disjoint-sets v0.4.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/tree.rs:668:17 [INFO] [stdout] | [INFO] [stdout] 668 | try!(self.unify(v1, v2)); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/tree.rs:465:17 [INFO] [stdout] | [INFO] [stdout] 465 | / mem::replace(&mut *guard_parent, Root { [INFO] [stdout] 466 | | data: new_data, [INFO] [stdout] 467 | | rank: rank, [INFO] [stdout] 468 | | }); [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: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 16.24s [INFO] running `Command { std: "docker" "inspect" "f709efe4ccf6972f5df18b2880301a5ead676ad235fd3921260bd8549705a7e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f709efe4ccf6972f5df18b2880301a5ead676ad235fd3921260bd8549705a7e0", kill_on_drop: false }` [INFO] [stdout] f709efe4ccf6972f5df18b2880301a5ead676ad235fd3921260bd8549705a7e0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", 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] d42e12b49f16a7b363dfdaf7fcaf09a5312a62b0eceec58aa417d2c672f8a93f [INFO] running `Command { std: "docker" "start" "-a" "d42e12b49f16a7b363dfdaf7fcaf09a5312a62b0eceec58aa417d2c672f8a93f", kill_on_drop: false }` [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/tree.rs:465:17 [INFO] [stderr] | [INFO] [stderr] 465 | / mem::replace(&mut *guard_parent, Root { [INFO] [stderr] 466 | | data: new_data, [INFO] [stderr] 467 | | rank: rank, [INFO] [stderr] 468 | | }); [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: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stderr] --> src/tree.rs:668:17 [INFO] [stderr] | [INFO] [stderr] 668 | try!(self.unify(v1, v2)); [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used [INFO] [stderr] --> src/tree.rs:465:17 [INFO] [stderr] | [INFO] [stderr] 465 | / mem::replace(&mut *guard_parent, Root { [INFO] [stderr] 466 | | data: new_data, [INFO] [stderr] 467 | | rank: rank, [INFO] [stderr] 468 | | }); [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: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/disjoint_sets-255e60f410ce7345 [INFO] [stdout] running 14 tests [INFO] [stdout] test array::tests::len ... ok [INFO] [stdout] test array::tests::unions ... ok [INFO] [stdout] test async::tests::changed ... ok [INFO] [stdout] test async::tests::len ... ok [INFO] [stdout] test array::tests::union ... ok [INFO] [stdout] test async::tests::union ... ok [INFO] [stdout] test async::tests::to_vec ... ok [INFO] [stdout] test tree::tests::unify_symbols ... ok [INFO] [stdout] test tree::tests::unify_vars ... ok [INFO] [stdout] test async::tests::unions ... ok [INFO] [stdout] test tree::tests::unify_flat ... ok [INFO] [stdout] test tree::tests::union ... ok [INFO] [stdout] test tree::tests::unions ... ok [INFO] [stdout] test tree::tests::unify_deeper ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Doc-tests disjoint-sets [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test src/lib.rs - (line 27) ... ok [INFO] [stdout] test src/lib.rs - (line 37) ... ok [INFO] [stdout] test src/tree.rs - tree::UnionFindNode (line 25) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "d42e12b49f16a7b363dfdaf7fcaf09a5312a62b0eceec58aa417d2c672f8a93f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d42e12b49f16a7b363dfdaf7fcaf09a5312a62b0eceec58aa417d2c672f8a93f", kill_on_drop: false }` [INFO] [stdout] d42e12b49f16a7b363dfdaf7fcaf09a5312a62b0eceec58aa417d2c672f8a93f