[INFO] fetching crate serde08 0.8.0...
[INFO] checking serde08-0.8.0 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate serde08 0.8.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate serde08 0.8.0 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 serde08 0.8.0
[INFO] finished tweaking crates.io crate serde08 0.8.0
[INFO] tweaked toml for crates.io crate serde08 0.8.0 written to /workspace/builds/worker-7/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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 12de6b617fca819ee4e0ef9e18400ba4eafa2c1e21096c881f21d172d5ca7ed2
[INFO] running `Command { std: "docker" "start" "-a" "12de6b617fca819ee4e0ef9e18400ba4eafa2c1e21096c881f21d172d5ca7ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12de6b617fca819ee4e0ef9e18400ba4eafa2c1e21096c881f21d172d5ca7ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12de6b617fca819ee4e0ef9e18400ba4eafa2c1e21096c881f21d172d5ca7ed2", kill_on_drop: false }`
[INFO] [stdout] 12de6b617fca819ee4e0ef9e18400ba4eafa2c1e21096c881f21d172d5ca7ed2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 41378c320563f87ce7da932d9b97cc8e6b6daa595c2ef6cfe593eddb8f5ea5fd
[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" "41378c320563f87ce7da932d9b97cc8e6b6daa595c2ef6cfe593eddb8f5ea5fd", kill_on_drop: false }`
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking serde08 v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `Command { std: "docker" "inspect" "41378c320563f87ce7da932d9b97cc8e6b6daa595c2ef6cfe593eddb8f5ea5fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41378c320563f87ce7da932d9b97cc8e6b6daa595c2ef6cfe593eddb8f5ea5fd", kill_on_drop: false }`
[INFO] [stdout] 41378c320563f87ce7da932d9b97cc8e6b6daa595c2ef6cfe593eddb8f5ea5fd
