[INFO] fetching crate rustengine 1.0.60...
[INFO] testing rustengine-1.0.60 against 1.49.0 for beta-1.50-1
[INFO] extracting crate rustengine 1.0.60 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate rustengine 1.0.60 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 rustengine 1.0.60
[INFO] finished tweaking crates.io crate rustengine 1.0.60
[INFO] tweaked toml for crates.io crate rustengine 1.0.60 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate rustengine 1.0.60 already has a lockfile, it will not be regenerated
[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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 570af592fb16f0dacf6b7f060ba40dcf704173ee45d9630c130325c2cd34e8a8
[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" "570af592fb16f0dacf6b7f060ba40dcf704173ee45d9630c130325c2cd34e8a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "570af592fb16f0dacf6b7f060ba40dcf704173ee45d9630c130325c2cd34e8a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "570af592fb16f0dacf6b7f060ba40dcf704173ee45d9630c130325c2cd34e8a8", kill_on_drop: false }`
[INFO] [stdout] 570af592fb16f0dacf6b7f060ba40dcf704173ee45d9630c130325c2cd34e8a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d972a91cb1d0215912fb361897a8576cbf85fe91bfae7d1e188d7ccd5a6affc7
[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" "d972a91cb1d0215912fb361897a8576cbf85fe91bfae7d1e188d7ccd5a6affc7", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.3.1
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rustengine v1.0.60 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.06s
[INFO] running `Command { std: "docker" "inspect" "d972a91cb1d0215912fb361897a8576cbf85fe91bfae7d1e188d7ccd5a6affc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d972a91cb1d0215912fb361897a8576cbf85fe91bfae7d1e188d7ccd5a6affc7", kill_on_drop: false }`
[INFO] [stdout] d972a91cb1d0215912fb361897a8576cbf85fe91bfae7d1e188d7ccd5a6affc7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7b342c5be258b02f175af76204c0d97f3c745aee522d4210b7642b4eb9b366b
[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" "e7b342c5be258b02f175af76204c0d97f3c745aee522d4210b7642b4eb9b366b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustengine v1.0.60 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.60s
[INFO] running `Command { std: "docker" "inspect" "e7b342c5be258b02f175af76204c0d97f3c745aee522d4210b7642b4eb9b366b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7b342c5be258b02f175af76204c0d97f3c745aee522d4210b7642b4eb9b366b", kill_on_drop: false }`
[INFO] [stdout] e7b342c5be258b02f175af76204c0d97f3c745aee522d4210b7642b4eb9b366b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] d8cb82f6a3dc538aa35a3a7e136d55fd77f0fcc2d213887e38da95e773d8a327
[INFO] running `Command { std: "docker" "start" "-a" "d8cb82f6a3dc538aa35a3a7e136d55fd77f0fcc2d213887e38da95e773d8a327", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rustenginelib-3053d0525da5a8be
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rustengine-a064c05d62ac7c5b
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests rustenginelib
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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] [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" "d8cb82f6a3dc538aa35a3a7e136d55fd77f0fcc2d213887e38da95e773d8a327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8cb82f6a3dc538aa35a3a7e136d55fd77f0fcc2d213887e38da95e773d8a327", kill_on_drop: false }`
[INFO] [stdout] d8cb82f6a3dc538aa35a3a7e136d55fd77f0fcc2d213887e38da95e773d8a327