[INFO] fetching crate mango_compiler_sem 0.1.0...
[INFO] testing mango_compiler_sem-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate mango_compiler_sem 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate mango_compiler_sem 0.1.0 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 mango_compiler_sem 0.1.0
[INFO] finished tweaking crates.io crate mango_compiler_sem 0.1.0
[INFO] tweaked toml for crates.io crate mango_compiler_sem 0.1.0 written to /workspace/builds/worker-8/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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 351d1a4f2ff85f1d7c1f4cc285588c6f9815411cc273144d4541d0dd6df6acc8
[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" "351d1a4f2ff85f1d7c1f4cc285588c6f9815411cc273144d4541d0dd6df6acc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "351d1a4f2ff85f1d7c1f4cc285588c6f9815411cc273144d4541d0dd6df6acc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "351d1a4f2ff85f1d7c1f4cc285588c6f9815411cc273144d4541d0dd6df6acc8", kill_on_drop: false }`
[INFO] [stdout] 351d1a4f2ff85f1d7c1f4cc285588c6f9815411cc273144d4541d0dd6df6acc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] d6915cbe5654c835d91294d79a6a165e26afcc0cc888ff2eddcf0ec405955399
[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" "d6915cbe5654c835d91294d79a6a165e26afcc0cc888ff2eddcf0ec405955399", kill_on_drop: false }`
[INFO] [stderr]    Compiling mango_compiler_sem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "d6915cbe5654c835d91294d79a6a165e26afcc0cc888ff2eddcf0ec405955399", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6915cbe5654c835d91294d79a6a165e26afcc0cc888ff2eddcf0ec405955399", kill_on_drop: false }`
[INFO] [stdout] d6915cbe5654c835d91294d79a6a165e26afcc0cc888ff2eddcf0ec405955399
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] a756f78627e49db08a5e1e10322c7142d1412b81e2e56939a3fff6c10fb34f0e
[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" "a756f78627e49db08a5e1e10322c7142d1412b81e2e56939a3fff6c10fb34f0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling mango_compiler_sem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "a756f78627e49db08a5e1e10322c7142d1412b81e2e56939a3fff6c10fb34f0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a756f78627e49db08a5e1e10322c7142d1412b81e2e56939a3fff6c10fb34f0e", kill_on_drop: false }`
[INFO] [stdout] a756f78627e49db08a5e1e10322c7142d1412b81e2e56939a3fff6c10fb34f0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] a81f2fce990b33e56ca85bb89dad3df33b556ac1ff4847afa4f32c1e1702fb4f
[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" "a81f2fce990b33e56ca85bb89dad3df33b556ac1ff4847afa4f32c1e1702fb4f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mango_compiler_sem-e792f486ae146a75
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mango_compiler_sem
[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
[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" "a81f2fce990b33e56ca85bb89dad3df33b556ac1ff4847afa4f32c1e1702fb4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a81f2fce990b33e56ca85bb89dad3df33b556ac1ff4847afa4f32c1e1702fb4f", kill_on_drop: false }`
[INFO] [stdout] a81f2fce990b33e56ca85bb89dad3df33b556ac1ff4847afa4f32c1e1702fb4f