[INFO] updating cached repository https://github.com/fifth-postulate/double-memory
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 09d21bcdd7f40abb4c8ccc3091951a0cf8e9ff51
[INFO] testing fifth-postulate/double-memory against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffifth-postulate%2Fdouble-memory" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fifth-postulate/double-memory on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/fifth-postulate/double-memory
[INFO] finished tweaking git repo https://github.com/fifth-postulate/double-memory
[INFO] tweaked toml for git repo https://github.com/fifth-postulate/double-memory written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/fifth-postulate/double-memory already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "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] 55a808f131179406dcc3173e6b26632de1f3437cceca1f251e8ad17d0bbc8f9f
[INFO] running `"docker" "start" "-a" "55a808f131179406dcc3173e6b26632de1f3437cceca1f251e8ad17d0bbc8f9f"`
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling matching v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `graph`
[INFO] [stderr]   --> src/lib.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     graph: &'a Graph<N, E, Undirected, I>,
[INFO] [stderr]    |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matching`
[INFO] [stderr]   --> src/lib.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     matching: &Matching<'a, I>,
[INFO] [stderr]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_matching`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.90s
[INFO] running `"docker" "inspect" "55a808f131179406dcc3173e6b26632de1f3437cceca1f251e8ad17d0bbc8f9f"`
[INFO] running `"docker" "rm" "-f" "55a808f131179406dcc3173e6b26632de1f3437cceca1f251e8ad17d0bbc8f9f"`
[INFO] [stdout] 55a808f131179406dcc3173e6b26632de1f3437cceca1f251e8ad17d0bbc8f9f
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "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] ce014a87993a0fef4e5790976df59bf51dc897567a7a0e6928665562bac647e7
[INFO] running `"docker" "start" "-a" "ce014a87993a0fef4e5790976df59bf51dc897567a7a0e6928665562bac647e7"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling matching v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `graph`
[INFO] [stderr]   --> src/lib.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     graph: &'a Graph<N, E, Undirected, I>,
[INFO] [stderr]    |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matching`
[INFO] [stderr]   --> src/lib.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     matching: &Matching<'a, I>,
[INFO] [stderr]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_matching`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `graph`
[INFO] [stderr]   --> src/lib.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     graph: &'a Graph<N, E, Undirected, I>,
[INFO] [stderr]    |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matching`
[INFO] [stderr]   --> src/lib.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     matching: &Matching<'a, I>,
[INFO] [stderr]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_matching`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.65s
[INFO] running `"docker" "inspect" "ce014a87993a0fef4e5790976df59bf51dc897567a7a0e6928665562bac647e7"`
[INFO] running `"docker" "rm" "-f" "ce014a87993a0fef4e5790976df59bf51dc897567a7a0e6928665562bac647e7"`
[INFO] [stdout] ce014a87993a0fef4e5790976df59bf51dc897567a7a0e6928665562bac647e7
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "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] 18301d8757b9f48045ad2379f53a7041e0f7d3e2fb51e68654fd58ecaec69edf
[INFO] running `"docker" "start" "-a" "18301d8757b9f48045ad2379f53a7041e0f7d3e2fb51e68654fd58ecaec69edf"`
[INFO] [stderr] warning: unused variable: `graph`
[INFO] [stderr]   --> src/lib.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     graph: &'a Graph<N, E, Undirected, I>,
[INFO] [stderr]    |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matching`
[INFO] [stderr]   --> src/lib.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     matching: &Matching<'a, I>,
[INFO] [stderr]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_matching`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `graph`
[INFO] [stderr]   --> src/lib.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     graph: &'a Graph<N, E, Undirected, I>,
[INFO] [stderr]    |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_graph`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `matching`
[INFO] [stderr]   --> src/lib.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     matching: &Matching<'a, I>,
[INFO] [stderr]    |     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_matching`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/matching-64b72cdb05cebd49
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test::trivial_test ... ok
[INFO] [stdout] test memory::test::memory_graph_has_correct_number_of_edges ... ok
[INFO] [stdout] test memory::test::memory_graph_has_correct_number_of_vertices ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/matching-fa4846dd092929a4
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests matching
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "18301d8757b9f48045ad2379f53a7041e0f7d3e2fb51e68654fd58ecaec69edf"`
[INFO] running `"docker" "rm" "-f" "18301d8757b9f48045ad2379f53a7041e0f7d3e2fb51e68654fd58ecaec69edf"`
[INFO] [stdout] 18301d8757b9f48045ad2379f53a7041e0f7d3e2fb51e68654fd58ecaec69edf