[INFO] cloning repository https://github.com/mediocreeee/rustchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mediocreeee/rustchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmediocreeee%2Frustchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmediocreeee%2Frustchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eaa2150598217623369ee8abbd3aead5db0dbee4
[INFO] checking mediocreeee/rustchain against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmediocreeee%2Frustchain" "/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/mediocreeee/rustchain on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mediocreeee/rustchain
[INFO] finished tweaking git repo https://github.com/mediocreeee/rustchain
[INFO] tweaked toml for git repo https://github.com/mediocreeee/rustchain written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/mediocreeee/rustchain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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" "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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be94a2375f21f7c34ac4289642105d5a61ad02919677237f0e7da38ad135b789
[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" "be94a2375f21f7c34ac4289642105d5a61ad02919677237f0e7da38ad135b789", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be94a2375f21f7c34ac4289642105d5a61ad02919677237f0e7da38ad135b789", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be94a2375f21f7c34ac4289642105d5a61ad02919677237f0e7da38ad135b789", kill_on_drop: false }`
[INFO] [stdout] be94a2375f21f7c34ac4289642105d5a61ad02919677237f0e7da38ad135b789
[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" "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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] 003ce4775990c395c5a12c0cff9a56b9e067d89d47d4f332f17d9d308f04eef7
[INFO] running `Command { std: "docker" "start" "-a" "003ce4775990c395c5a12c0cff9a56b9e067d89d47d4f332f17d9d308f04eef7", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking subtle v2.2.3
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking blake2 v0.9.0
[INFO] [stderr]     Checking rustchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `ChangeStoreValue`
[INFO] [stdout]    --> src/blockchain.rs:356:5
[INFO] [stdout]     |
[INFO] [stdout] 356 |     ChangeStoreValue { key: String, value: String },
[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: variant is never constructed: `ChangeStoreValue`
[INFO] [stdout]    --> src/blockchain.rs:356:5
[INFO] [stdout]     |
[INFO] [stdout] 356 |     ChangeStoreValue { key: String, value: String },
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.58s
[INFO] running `Command { std: "docker" "inspect" "003ce4775990c395c5a12c0cff9a56b9e067d89d47d4f332f17d9d308f04eef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "003ce4775990c395c5a12c0cff9a56b9e067d89d47d4f332f17d9d308f04eef7", kill_on_drop: false }`
[INFO] [stdout] 003ce4775990c395c5a12c0cff9a56b9e067d89d47d4f332f17d9d308f04eef7