[INFO] updating cached repository https://github.com/greguz/ralph
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 95849ec3a5e7462297c98781287ce7d6b6c6efb9
[INFO] checking greguz/ralph against try#85cc1486e1f000dce4bb8e1b3cfab2b654b102a8 for pr-73323
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgreguz%2Fralph" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/greguz/ralph on toolchain 85cc1486e1f000dce4bb8e1b3cfab2b654b102a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/greguz/ralph
[INFO] finished tweaking git repo https://github.com/greguz/ralph
[INFO] tweaked toml for git repo https://github.com/greguz/ralph written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/greguz/ralph already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37d4d5c60f5da5ebae7448a6689cd21c5f28de44c472ff619877f900a687ce2f
[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" "37d4d5c60f5da5ebae7448a6689cd21c5f28de44c472ff619877f900a687ce2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37d4d5c60f5da5ebae7448a6689cd21c5f28de44c472ff619877f900a687ce2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37d4d5c60f5da5ebae7448a6689cd21c5f28de44c472ff619877f900a687ce2f", kill_on_drop: false }`
[INFO] [stdout] 37d4d5c60f5da5ebae7448a6689cd21c5f28de44c472ff619877f900a687ce2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b02fc039e9615fdcfc184e1ea4301acf2d50c2ff41abe76f8c64d2169a317a7
[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" "7b02fc039e9615fdcfc184e1ea4301acf2d50c2ff41abe76f8c64d2169a317a7", kill_on_drop: false }`
[INFO] [stderr]     Checking ralph v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `enc_boolean`
[INFO] [stdout]   --> src/store/encoder.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn enc_boolean(value: bool) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enc_boolean`
[INFO] [stdout]   --> src/store/encoder.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn enc_boolean(value: bool) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "7b02fc039e9615fdcfc184e1ea4301acf2d50c2ff41abe76f8c64d2169a317a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b02fc039e9615fdcfc184e1ea4301acf2d50c2ff41abe76f8c64d2169a317a7", kill_on_drop: false }`
[INFO] [stdout] 7b02fc039e9615fdcfc184e1ea4301acf2d50c2ff41abe76f8c64d2169a317a7