[INFO] fetching crate maestro 0.0.0...
[INFO] testing maestro-0.0.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate maestro 0.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate maestro 0.0.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maestro 0.0.0
[INFO] finished tweaking crates.io crate maestro 0.0.0
[INFO] tweaked toml for crates.io crate maestro 0.0.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate maestro 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", 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] 99a3f0f533c64f97cc0e01101fa6c9e3a114338fe63e908f9b5d24ac469c5ae9
[INFO] running `Command { std: "docker" "start" "-a" "99a3f0f533c64f97cc0e01101fa6c9e3a114338fe63e908f9b5d24ac469c5ae9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99a3f0f533c64f97cc0e01101fa6c9e3a114338fe63e908f9b5d24ac469c5ae9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99a3f0f533c64f97cc0e01101fa6c9e3a114338fe63e908f9b5d24ac469c5ae9", kill_on_drop: false }`
[INFO] [stdout] 99a3f0f533c64f97cc0e01101fa6c9e3a114338fe63e908f9b5d24ac469c5ae9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97487b02bcd48ef4b7b6811e8ec735c3251bf372131c8a183cad513352ec28ca
[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" "97487b02bcd48ef4b7b6811e8ec735c3251bf372131c8a183cad513352ec28ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling maestro v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "97487b02bcd48ef4b7b6811e8ec735c3251bf372131c8a183cad513352ec28ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97487b02bcd48ef4b7b6811e8ec735c3251bf372131c8a183cad513352ec28ca", kill_on_drop: false }`
[INFO] [stdout] 97487b02bcd48ef4b7b6811e8ec735c3251bf372131c8a183cad513352ec28ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cbc652e33a8f2f2ea4b097f699d1ecd571761a5f7d88dbb3760ba8b0d4823b1c
[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" "cbc652e33a8f2f2ea4b097f699d1ecd571761a5f7d88dbb3760ba8b0d4823b1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling maestro v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "cbc652e33a8f2f2ea4b097f699d1ecd571761a5f7d88dbb3760ba8b0d4823b1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbc652e33a8f2f2ea4b097f699d1ecd571761a5f7d88dbb3760ba8b0d4823b1c", kill_on_drop: false }`
[INFO] [stdout] cbc652e33a8f2f2ea4b097f699d1ecd571761a5f7d88dbb3760ba8b0d4823b1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4005a37fde4597e3ed5ad5ea023bec61fe87531bb00d373308a8a317e16c8b17
[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" "4005a37fde4597e3ed5ad5ea023bec61fe87531bb00d373308a8a317e16c8b17", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/maestro-7990e76716956eb4
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4005a37fde4597e3ed5ad5ea023bec61fe87531bb00d373308a8a317e16c8b17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4005a37fde4597e3ed5ad5ea023bec61fe87531bb00d373308a8a317e16c8b17", kill_on_drop: false }`
[INFO] [stdout] 4005a37fde4597e3ed5ad5ea023bec61fe87531bb00d373308a8a317e16c8b17