[INFO] fetching crate mango_compiler_optimizing 0.1.0...
[INFO] testing mango_compiler_optimizing-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate mango_compiler_optimizing 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate mango_compiler_optimizing 0.1.0 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 mango_compiler_optimizing 0.1.0
[INFO] finished tweaking crates.io crate mango_compiler_optimizing 0.1.0
[INFO] tweaked toml for crates.io crate mango_compiler_optimizing 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] dfc8389e8e65a9d4256ea5c3d65d07bae93381666d6ea26874c03a6f2c298cc0
[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" "dfc8389e8e65a9d4256ea5c3d65d07bae93381666d6ea26874c03a6f2c298cc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfc8389e8e65a9d4256ea5c3d65d07bae93381666d6ea26874c03a6f2c298cc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfc8389e8e65a9d4256ea5c3d65d07bae93381666d6ea26874c03a6f2c298cc0", kill_on_drop: false }`
[INFO] [stdout] dfc8389e8e65a9d4256ea5c3d65d07bae93381666d6ea26874c03a6f2c298cc0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 0823ecc7729dfee89d1669f87b759afb4f00e772f99d597f1017a3409f0e0555
[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" "0823ecc7729dfee89d1669f87b759afb4f00e772f99d597f1017a3409f0e0555", kill_on_drop: false }`
[INFO] [stderr]    Compiling mango_compiler_optimizing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "0823ecc7729dfee89d1669f87b759afb4f00e772f99d597f1017a3409f0e0555", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0823ecc7729dfee89d1669f87b759afb4f00e772f99d597f1017a3409f0e0555", kill_on_drop: false }`
[INFO] [stdout] 0823ecc7729dfee89d1669f87b759afb4f00e772f99d597f1017a3409f0e0555
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a548690d8fbeffb7fa3133232935221cb530407300ec0bfc835b23bf5b385ab5
[INFO] running `Command { std: "docker" "start" "-a" "a548690d8fbeffb7fa3133232935221cb530407300ec0bfc835b23bf5b385ab5", kill_on_drop: false }`
[INFO] [stderr]    Compiling mango_compiler_optimizing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "a548690d8fbeffb7fa3133232935221cb530407300ec0bfc835b23bf5b385ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a548690d8fbeffb7fa3133232935221cb530407300ec0bfc835b23bf5b385ab5", kill_on_drop: false }`
[INFO] [stdout] a548690d8fbeffb7fa3133232935221cb530407300ec0bfc835b23bf5b385ab5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dde83d52ccc4d05fa2cf950163471a36b95848c57b36e3184202e32ecb14ce23
[INFO] running `Command { std: "docker" "start" "-a" "dde83d52ccc4d05fa2cf950163471a36b95848c57b36e3184202e32ecb14ce23", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mango_compiler_optimizing-3314a1c9fd8e2c4f
[INFO] [stdout] running 1 test
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mango_compiler_optimizing
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dde83d52ccc4d05fa2cf950163471a36b95848c57b36e3184202e32ecb14ce23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dde83d52ccc4d05fa2cf950163471a36b95848c57b36e3184202e32ecb14ce23", kill_on_drop: false }`
[INFO] [stdout] dde83d52ccc4d05fa2cf950163471a36b95848c57b36e3184202e32ecb14ce23