[INFO] fetching crate mammoth 0.0.0...
[INFO] testing mammoth-0.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate mammoth 0.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate mammoth 0.0.0 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 mammoth 0.0.0
[INFO] finished tweaking crates.io crate mammoth 0.0.0
[INFO] tweaked toml for crates.io crate mammoth 0.0.0 written to /workspace/builds/worker-0/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-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" "+1.49.0" "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] f421522e42c3581fce45bfe0bcf6e0602611425b18190c2ac1c2420249d45d57
[INFO] running `Command { std: "docker" "start" "-a" "f421522e42c3581fce45bfe0bcf6e0602611425b18190c2ac1c2420249d45d57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f421522e42c3581fce45bfe0bcf6e0602611425b18190c2ac1c2420249d45d57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f421522e42c3581fce45bfe0bcf6e0602611425b18190c2ac1c2420249d45d57", kill_on_drop: false }`
[INFO] [stdout] f421522e42c3581fce45bfe0bcf6e0602611425b18190c2ac1c2420249d45d57
[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" "+1.49.0" "build" "--frozen" "--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] 4a312868933703d0c822c725c1559d9098a51e3faaa966576d4c088021bc2dbb
[INFO] running `Command { std: "docker" "start" "-a" "4a312868933703d0c822c725c1559d9098a51e3faaa966576d4c088021bc2dbb", kill_on_drop: false }`
[INFO] [stderr]    Compiling mammoth v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "4a312868933703d0c822c725c1559d9098a51e3faaa966576d4c088021bc2dbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a312868933703d0c822c725c1559d9098a51e3faaa966576d4c088021bc2dbb", kill_on_drop: false }`
[INFO] [stdout] 4a312868933703d0c822c725c1559d9098a51e3faaa966576d4c088021bc2dbb
[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" "+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] 422a88ad72e0ee25c2435d27df98d92a8632d9769f7dfe6969602dd812db39ff
[INFO] running `Command { std: "docker" "start" "-a" "422a88ad72e0ee25c2435d27df98d92a8632d9769f7dfe6969602dd812db39ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling mammoth v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "422a88ad72e0ee25c2435d27df98d92a8632d9769f7dfe6969602dd812db39ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "422a88ad72e0ee25c2435d27df98d92a8632d9769f7dfe6969602dd812db39ff", kill_on_drop: false }`
[INFO] [stdout] 422a88ad72e0ee25c2435d27df98d92a8632d9769f7dfe6969602dd812db39ff
[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" "+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] 2e9604ffa035b73573c2aa7ffe11cdec6d5e3549f2d2e5f6caca3911075ff40c
[INFO] running `Command { std: "docker" "start" "-a" "2e9604ffa035b73573c2aa7ffe11cdec6d5e3549f2d2e5f6caca3911075ff40c", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mammoth-b81cce9c1ac0b9c4
[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" "2e9604ffa035b73573c2aa7ffe11cdec6d5e3549f2d2e5f6caca3911075ff40c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e9604ffa035b73573c2aa7ffe11cdec6d5e3549f2d2e5f6caca3911075ff40c", kill_on_drop: false }`
[INFO] [stdout] 2e9604ffa035b73573c2aa7ffe11cdec6d5e3549f2d2e5f6caca3911075ff40c