[INFO] cloning repository https://github.com/wagenet/helix-hello-world-rails
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wagenet/helix-hello-world-rails" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwagenet%2Fhelix-hello-world-rails", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwagenet%2Fhelix-hello-world-rails'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d9a7c043499648e3e53d08624dbb0016a57a53f
[INFO] checking wagenet/helix-hello-world-rails against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwagenet%2Fhelix-hello-world-rails" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wagenet/helix-hello-world-rails on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wagenet/helix-hello-world-rails
[INFO] finished tweaking git repo https://github.com/wagenet/helix-hello-world-rails
[INFO] tweaked toml for git repo https://github.com/wagenet/helix-hello-world-rails written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/wagenet/helix-hello-world-rails already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libcruby-sys v0.5.0-alpha-1
[INFO] [stderr]   Downloaded helix_runtime v0.5.0-alpha-1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae6ce8ddbb6b31f7f2c9a60130e216b4238d9fb325a692cdfffc5a89e93bb24b
[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" "ae6ce8ddbb6b31f7f2c9a60130e216b4238d9fb325a692cdfffc5a89e93bb24b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae6ce8ddbb6b31f7f2c9a60130e216b4238d9fb325a692cdfffc5a89e93bb24b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae6ce8ddbb6b31f7f2c9a60130e216b4238d9fb325a692cdfffc5a89e93bb24b", kill_on_drop: false }`
[INFO] [stdout] ae6ce8ddbb6b31f7f2c9a60130e216b4238d9fb325a692cdfffc5a89e93bb24b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e60fabae9d63a45a1621723809a20a70e6e9f2474c0e085c1bd89d38fe10c81d
[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" "e60fabae9d63a45a1621723809a20a70e6e9f2474c0e085c1bd89d38fe10c81d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libcruby-sys v0.5.0-alpha-1
[INFO] [stderr]     Checking cstr-macro v0.1.0
[INFO] [stderr]     Checking cslice v0.2.0
[INFO] [stderr]     Checking helix_runtime v0.5.0-alpha-1
[INFO] [stderr]     Checking helix_hello_world_rails v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.55s
[INFO] running `Command { std: "docker" "inspect" "e60fabae9d63a45a1621723809a20a70e6e9f2474c0e085c1bd89d38fe10c81d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e60fabae9d63a45a1621723809a20a70e6e9f2474c0e085c1bd89d38fe10c81d", kill_on_drop: false }`
[INFO] [stdout] e60fabae9d63a45a1621723809a20a70e6e9f2474c0e085c1bd89d38fe10c81d