[INFO] fetching crate keygen 2.1.0...
[INFO] testing keygen-2.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate keygen 2.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate keygen 2.1.0 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 keygen 2.1.0
[INFO] finished tweaking crates.io crate keygen 2.1.0
[INFO] tweaked toml for crates.io crate keygen 2.1.0 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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3fdf976fc20bacb09f4823c8856d3b2d4d7a65cccc7afc47cbf8b1abca80e04
[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" "c3fdf976fc20bacb09f4823c8856d3b2d4d7a65cccc7afc47cbf8b1abca80e04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3fdf976fc20bacb09f4823c8856d3b2d4d7a65cccc7afc47cbf8b1abca80e04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3fdf976fc20bacb09f4823c8856d3b2d4d7a65cccc7afc47cbf8b1abca80e04", kill_on_drop: false }`
[INFO] [stdout] c3fdf976fc20bacb09f4823c8856d3b2d4d7a65cccc7afc47cbf8b1abca80e04
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/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] e846e7c7be7e020aee6a4cc835f903a32afd26d7ddc33aba9c9bc76e14c72531
[INFO] running `Command { std: "docker" "start" "-a" "e846e7c7be7e020aee6a4cc835f903a32afd26d7ddc33aba9c9bc76e14c72531", kill_on_drop: false }`
[INFO] [stderr]    Compiling serial-key v2.0.0
[INFO] [stderr]    Compiling keygen v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.29s
[INFO] running `Command { std: "docker" "inspect" "e846e7c7be7e020aee6a4cc835f903a32afd26d7ddc33aba9c9bc76e14c72531", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e846e7c7be7e020aee6a4cc835f903a32afd26d7ddc33aba9c9bc76e14c72531", kill_on_drop: false }`
[INFO] [stdout] e846e7c7be7e020aee6a4cc835f903a32afd26d7ddc33aba9c9bc76e14c72531
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/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] 22a8f1d698218505250d804bbcf7f88645a0836e049a34feb37760d4cef57964
[INFO] running `Command { std: "docker" "start" "-a" "22a8f1d698218505250d804bbcf7f88645a0836e049a34feb37760d4cef57964", kill_on_drop: false }`
[INFO] [stderr]    Compiling keygen v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "22a8f1d698218505250d804bbcf7f88645a0836e049a34feb37760d4cef57964", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22a8f1d698218505250d804bbcf7f88645a0836e049a34feb37760d4cef57964", kill_on_drop: false }`
[INFO] [stdout] 22a8f1d698218505250d804bbcf7f88645a0836e049a34feb37760d4cef57964
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/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] 05dc5d2680a9149cf028632959229cfba3c1c6c8091a2a938bcc755fb45242a7
[INFO] running `Command { std: "docker" "start" "-a" "05dc5d2680a9149cf028632959229cfba3c1c6c8091a2a938bcc755fb45242a7", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/keygen-9aec4c2e37739b67
[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" "05dc5d2680a9149cf028632959229cfba3c1c6c8091a2a938bcc755fb45242a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05dc5d2680a9149cf028632959229cfba3c1c6c8091a2a938bcc755fb45242a7", kill_on_drop: false }`
[INFO] [stdout] 05dc5d2680a9149cf028632959229cfba3c1c6c8091a2a938bcc755fb45242a7