[INFO] fetching crate adjacent-pair-iterator 0.1.2...
[INFO] testing adjacent-pair-iterator-0.1.2 against 1.49.0 for beta-1.50-1
[INFO] extracting crate adjacent-pair-iterator 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate adjacent-pair-iterator 0.1.2 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 adjacent-pair-iterator 0.1.2
[INFO] finished tweaking crates.io crate adjacent-pair-iterator 0.1.2
[INFO] tweaked toml for crates.io crate adjacent-pair-iterator 0.1.2 written to /workspace/builds/worker-2/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 365e1158415077ec7b605fd3a037c16694abe6ce938aafac969478c012768df9
[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" "365e1158415077ec7b605fd3a037c16694abe6ce938aafac969478c012768df9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "365e1158415077ec7b605fd3a037c16694abe6ce938aafac969478c012768df9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "365e1158415077ec7b605fd3a037c16694abe6ce938aafac969478c012768df9", kill_on_drop: false }`
[INFO] [stdout] 365e1158415077ec7b605fd3a037c16694abe6ce938aafac969478c012768df9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stdout] cfeb8d7eccb1a08cbcbd1bf3310f1dad9623fac8101ab51b69e55b228bf24751
[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" "cfeb8d7eccb1a08cbcbd1bf3310f1dad9623fac8101ab51b69e55b228bf24751", kill_on_drop: false }`
[INFO] [stderr]    Compiling adjacent-pair-iterator v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "cfeb8d7eccb1a08cbcbd1bf3310f1dad9623fac8101ab51b69e55b228bf24751", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfeb8d7eccb1a08cbcbd1bf3310f1dad9623fac8101ab51b69e55b228bf24751", kill_on_drop: false }`
[INFO] [stdout] cfeb8d7eccb1a08cbcbd1bf3310f1dad9623fac8101ab51b69e55b228bf24751
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 55286d824cdb3b8bdef88f35375a239e9a63f7d40b132af167377b7c7e5a8a2c
[INFO] running `Command { std: "docker" "start" "-a" "55286d824cdb3b8bdef88f35375a239e9a63f7d40b132af167377b7c7e5a8a2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling adjacent-pair-iterator v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "55286d824cdb3b8bdef88f35375a239e9a63f7d40b132af167377b7c7e5a8a2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55286d824cdb3b8bdef88f35375a239e9a63f7d40b132af167377b7c7e5a8a2c", kill_on_drop: false }`
[INFO] [stdout] 55286d824cdb3b8bdef88f35375a239e9a63f7d40b132af167377b7c7e5a8a2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 89aa4e85c2f13d6131e27d5e952ec3f3134e6d238ff9f259a6d4ab670302a7c5
[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" "89aa4e85c2f13d6131e27d5e952ec3f3134e6d238ff9f259a6d4ab670302a7c5", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stdout] running 6 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/adjacent_pair_iterator-4ddc0d041b365b8c
[INFO] [stdout] test tests::should_provide_nothing_for_only_one_input ... ok
[INFO] [stderr]    Doc-tests adjacent-pair-iterator
[INFO] [stdout] test tests::should_provide_many_pairs ... ok
[INFO] [stdout] test tests::should_provide_pair_for_two_inputs ... ok
[INFO] [stdout] test tests::should_provide_two_pairs_for_three_inputs ... ok
[INFO] [stdout] test tests::should_work_with_into_iterator ... ok
[INFO] [stdout] test tests::should_provide_nothing_without_items ... 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" "89aa4e85c2f13d6131e27d5e952ec3f3134e6d238ff9f259a6d4ab670302a7c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89aa4e85c2f13d6131e27d5e952ec3f3134e6d238ff9f259a6d4ab670302a7c5", kill_on_drop: false }`
[INFO] [stdout] 89aa4e85c2f13d6131e27d5e952ec3f3134e6d238ff9f259a6d4ab670302a7c5