[INFO] fetching crate arg_enum_proc_macro 0.3.0...
[INFO] testing arg_enum_proc_macro-0.3.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate arg_enum_proc_macro 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate arg_enum_proc_macro 0.3.0 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 arg_enum_proc_macro 0.3.0
[INFO] finished tweaking crates.io crate arg_enum_proc_macro 0.3.0
[INFO] tweaked toml for crates.io crate arg_enum_proc_macro 0.3.0 written to /workspace/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 2bcfc12629f49ca5eabf5b3454a9854b46d6377a903054207f88e82fbb7e52b7
[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" "2bcfc12629f49ca5eabf5b3454a9854b46d6377a903054207f88e82fbb7e52b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bcfc12629f49ca5eabf5b3454a9854b46d6377a903054207f88e82fbb7e52b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bcfc12629f49ca5eabf5b3454a9854b46d6377a903054207f88e82fbb7e52b7", kill_on_drop: false }`
[INFO] [stdout] 2bcfc12629f49ca5eabf5b3454a9854b46d6377a903054207f88e82fbb7e52b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 01c954db4afa3cd948b984725fe99587356d8c1f194892e1aba25d5f25d1a728
[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" "01c954db4afa3cd948b984725fe99587356d8c1f194892e1aba25d5f25d1a728", kill_on_drop: false }`
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.39s
[INFO] running `Command { std: "docker" "inspect" "01c954db4afa3cd948b984725fe99587356d8c1f194892e1aba25d5f25d1a728", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01c954db4afa3cd948b984725fe99587356d8c1f194892e1aba25d5f25d1a728", kill_on_drop: false }`
[INFO] [stdout] 01c954db4afa3cd948b984725fe99587356d8c1f194892e1aba25d5f25d1a728
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 62fc0e8389a251b0687f881bf89f443e0c0c76ffeba06b9fb385bf4096c1dcda
[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" "62fc0e8389a251b0687f881bf89f443e0c0c76ffeba06b9fb385bf4096c1dcda", kill_on_drop: false }`
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "62fc0e8389a251b0687f881bf89f443e0c0c76ffeba06b9fb385bf4096c1dcda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62fc0e8389a251b0687f881bf89f443e0c0c76ffeba06b9fb385bf4096c1dcda", kill_on_drop: false }`
[INFO] [stdout] 62fc0e8389a251b0687f881bf89f443e0c0c76ffeba06b9fb385bf4096c1dcda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] 2d7f3379e77ee02b12786a8ec9e6513d850c3728a268ba2ec641ace54840665a
[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" "2d7f3379e77ee02b12786a8ec9e6513d850c3728a268ba2ec641ace54840665a", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 4 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/enums-dcd7244ce432ecc5
[INFO] [stdout] test alias::parse ... ok
[INFO] [stderr]    Doc-tests arg_enum_proc_macro
[INFO] [stdout] test alias::variants ... ok
[INFO] [stdout] test parse ... ok
[INFO] [stdout] test variants ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - arg_enum (line 72) ... ok
[INFO] [stdout] test src/lib.rs - arg_enum (line 84) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2d7f3379e77ee02b12786a8ec9e6513d850c3728a268ba2ec641ace54840665a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d7f3379e77ee02b12786a8ec9e6513d850c3728a268ba2ec641ace54840665a", kill_on_drop: false }`
[INFO] [stdout] 2d7f3379e77ee02b12786a8ec9e6513d850c3728a268ba2ec641ace54840665a