[INFO] fetching crate elias-fano 1.1.0...
[INFO] testing elias-fano-1.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate elias-fano 1.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate elias-fano 1.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate elias-fano 1.1.0
[INFO] finished tweaking crates.io crate elias-fano 1.1.0
[INFO] tweaked toml for crates.io crate elias-fano 1.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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-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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d189669ba172f219f4491c50362bbb78a3c89ff5f50337e3943addf7b6f0dc1
[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" "7d189669ba172f219f4491c50362bbb78a3c89ff5f50337e3943addf7b6f0dc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d189669ba172f219f4491c50362bbb78a3c89ff5f50337e3943addf7b6f0dc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d189669ba172f219f4491c50362bbb78a3c89ff5f50337e3943addf7b6f0dc1", kill_on_drop: false }`
[INFO] [stdout] 7d189669ba172f219f4491c50362bbb78a3c89ff5f50337e3943addf7b6f0dc1
[INFO] running `Command { std: "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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", 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] 43d79cf260c3c437e08df1242d54b637dd692ce3455f78a91bd2ba17b6f7f3a0
[INFO] running `Command { std: "docker" "start" "-a" "43d79cf260c3c437e08df1242d54b637dd692ce3455f78a91bd2ba17b6f7f3a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling elias-fano v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "43d79cf260c3c437e08df1242d54b637dd692ce3455f78a91bd2ba17b6f7f3a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43d79cf260c3c437e08df1242d54b637dd692ce3455f78a91bd2ba17b6f7f3a0", kill_on_drop: false }`
[INFO] [stdout] 43d79cf260c3c437e08df1242d54b637dd692ce3455f78a91bd2ba17b6f7f3a0
[INFO] running `Command { std: "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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0aa509ffd30984d5820ea66f421e2a2bd93d8b707e2491028bac3eed5bf4dc6
[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" "c0aa509ffd30984d5820ea66f421e2a2bd93d8b707e2491028bac3eed5bf4dc6", kill_on_drop: false }`
[INFO] [stderr]    Compiling elias-fano v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/lib.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     ef.skip(500);
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> tests/lib.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     ef.skip(350);
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `Command { std: "docker" "inspect" "c0aa509ffd30984d5820ea66f421e2a2bd93d8b707e2491028bac3eed5bf4dc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0aa509ffd30984d5820ea66f421e2a2bd93d8b707e2491028bac3eed5bf4dc6", kill_on_drop: false }`
[INFO] [stdout] c0aa509ffd30984d5820ea66f421e2a2bd93d8b707e2491028bac3eed5bf4dc6
[INFO] running `Command { std: "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" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d6e33f2622f8637afdf9634c1976ef5880e714800f182ad3a298df164f01a679
[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" "d6e33f2622f8637afdf9634c1976ef5880e714800f182ad3a298df164f01a679", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stdout] running 1 test
[INFO] [stderr]   --> tests/lib.rs:65:5
[INFO] [stdout] test utils::tests::test_msb ... ok
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 65 |     ef.skip(500);
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] running 6 tests
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] test test_generic ... ok
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> tests/lib.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     ef.skip(350);
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/elias_fano-3d355eb4d7ed4dbb
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lib-3ec5e534e1471f02
[INFO] [stdout] test test_membership ... ok
[INFO] [stdout] test test_skip ... ok
[INFO] [stdout] test test_position ... ok
[INFO] [stdout] test test_reset ... ok
[INFO] [stderr]    Doc-tests elias-fano
[INFO] [stdout] test test_move ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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 `Command { std: "docker" "inspect" "d6e33f2622f8637afdf9634c1976ef5880e714800f182ad3a298df164f01a679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6e33f2622f8637afdf9634c1976ef5880e714800f182ad3a298df164f01a679", kill_on_drop: false }`
[INFO] [stdout] d6e33f2622f8637afdf9634c1976ef5880e714800f182ad3a298df164f01a679