[INFO] fetching crate backr 0.5.0...
[INFO] checking backr-0.5.0 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate backr 0.5.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate backr 0.5.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate backr 0.5.0
[INFO] finished tweaking crates.io crate backr 0.5.0
[INFO] tweaked toml for crates.io crate backr 0.5.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] 5aa08a424d18e8a8c65de5a7d20b74396ed43e3c2b025a32a8ebcc20952cbe7b
[INFO] running `Command { std: "docker" "start" "-a" "5aa08a424d18e8a8c65de5a7d20b74396ed43e3c2b025a32a8ebcc20952cbe7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5aa08a424d18e8a8c65de5a7d20b74396ed43e3c2b025a32a8ebcc20952cbe7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5aa08a424d18e8a8c65de5a7d20b74396ed43e3c2b025a32a8ebcc20952cbe7b", kill_on_drop: false }`
[INFO] [stdout] 5aa08a424d18e8a8c65de5a7d20b74396ed43e3c2b025a32a8ebcc20952cbe7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92101421e1740e0f6bc17d58339bf407c5d3c2e1908f73ae6e7f78d11ee6a5ca
[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" "92101421e1740e0f6bc17d58339bf407c5d3c2e1908f73ae6e7f78d11ee6a5ca", kill_on_drop: false }`
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]     Checking progress v0.2.0
[INFO] [stderr]     Checking backr v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "92101421e1740e0f6bc17d58339bf407c5d3c2e1908f73ae6e7f78d11ee6a5ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92101421e1740e0f6bc17d58339bf407c5d3c2e1908f73ae6e7f78d11ee6a5ca", kill_on_drop: false }`
[INFO] [stdout] 92101421e1740e0f6bc17d58339bf407c5d3c2e1908f73ae6e7f78d11ee6a5ca
