[INFO] crate disjoint-sets 0.4.2 is already in cache
[INFO] testing disjoint-sets-0.4.2 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] extracting crate disjoint-sets 0.4.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate disjoint-sets 0.4.2 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f0e50ca6f49ed061974c2c77381392c4a82cf3c30e47227d970092943746adc2
[INFO] running `"docker" "start" "-a" "f0e50ca6f49ed061974c2c77381392c4a82cf3c30e47227d970092943746adc2"`
[INFO] [stderr]    Compiling disjoint-sets v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "f0e50ca6f49ed061974c2c77381392c4a82cf3c30e47227d970092943746adc2"`
[INFO] running `"docker" "rm" "-f" "f0e50ca6f49ed061974c2c77381392c4a82cf3c30e47227d970092943746adc2"`
[INFO] [stdout] f0e50ca6f49ed061974c2c77381392c4a82cf3c30e47227d970092943746adc2
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] da818f5d738784a414e11a355880050724519f63eff9d86292e9c56f24fd55c0
[INFO] running `"docker" "start" "-a" "da818f5d738784a414e11a355880050724519f63eff9d86292e9c56f24fd55c0"`
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling disjoint-sets v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item '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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 17.73s
[INFO] running `"docker" "inspect" "da818f5d738784a414e11a355880050724519f63eff9d86292e9c56f24fd55c0"`
[INFO] running `"docker" "rm" "-f" "da818f5d738784a414e11a355880050724519f63eff9d86292e9c56f24fd55c0"`
[INFO] [stdout] da818f5d738784a414e11a355880050724519f63eff9d86292e9c56f24fd55c0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 00d5c95fcd082d44f1dca989cde5cde06999ce9743c8f398392d7e9cc73bb18f
[INFO] running `"docker" "start" "-a" "00d5c95fcd082d44f1dca989cde5cde06999ce9743c8f398392d7e9cc73bb18f"`
[INFO] [stderr] warning: use of deprecated item '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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/disjoint_sets-3ea1730ec12dade5
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test array::tests::union ... ok
[INFO] [stdout] test array::tests::len ... ok
[INFO] [stdout] test async::tests::changed ... ok
[INFO] [stdout] test array::tests::unions ... ok
[INFO] [stdout] test async::tests::to_vec ... ok
[INFO] [stdout] test async::tests::len ... ok
[INFO] [stdout] test async::tests::union ... ok
[INFO] [stdout] test async::tests::unions ... ok
[INFO] [stdout] test tree::tests::unions ... ok
[INFO] [stdout] test tree::tests::union ... ok
[INFO] [stdout] test tree::tests::unify_vars ... ok
[INFO] [stdout] test tree::tests::unify_deeper ... ok
[INFO] [stdout] test tree::tests::unify_flat ... ok
[INFO] [stdout] test tree::tests::unify_symbols ... ok
[INFO] [stderr]    Doc-tests disjoint-sets
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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 `"docker" "inspect" "00d5c95fcd082d44f1dca989cde5cde06999ce9743c8f398392d7e9cc73bb18f"`
[INFO] running `"docker" "rm" "-f" "00d5c95fcd082d44f1dca989cde5cde06999ce9743c8f398392d7e9cc73bb18f"`
[INFO] [stdout] 00d5c95fcd082d44f1dca989cde5cde06999ce9743c8f398392d7e9cc73bb18f