[INFO] fetching crate mcr 0.2.1...
[INFO] checking mcr-0.2.1 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate mcr 0.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate mcr 0.2.1 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 mcr 0.2.1
[INFO] finished tweaking crates.io crate mcr 0.2.1
[INFO] tweaked toml for crates.io crate mcr 0.2.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate mcr 0.2.1 already has a lockfile, it will not be regenerated
[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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stdout] 208faeb25237dc280d140e273231089d62c08eeb9f3e955572f1a0e20735327e
[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" "208faeb25237dc280d140e273231089d62c08eeb9f3e955572f1a0e20735327e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "208faeb25237dc280d140e273231089d62c08eeb9f3e955572f1a0e20735327e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "208faeb25237dc280d140e273231089d62c08eeb9f3e955572f1a0e20735327e", kill_on_drop: false }`
[INFO] [stdout] 208faeb25237dc280d140e273231089d62c08eeb9f3e955572f1a0e20735327e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a3755b94170335952fe7654f43b9ac8434b5500ed0d0125101aaeb41eb19a373
[INFO] running `Command { std: "docker" "start" "-a" "a3755b94170335952fe7654f43b9ac8434b5500ed0d0125101aaeb41eb19a373", kill_on_drop: false }`
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking mcr v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.99s
[INFO] running `Command { std: "docker" "inspect" "a3755b94170335952fe7654f43b9ac8434b5500ed0d0125101aaeb41eb19a373", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3755b94170335952fe7654f43b9ac8434b5500ed0d0125101aaeb41eb19a373", kill_on_drop: false }`
[INFO] [stdout] a3755b94170335952fe7654f43b9ac8434b5500ed0d0125101aaeb41eb19a373
