[INFO] cloning repository https://github.com/RobinMcNally/LandbaseOptimizer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RobinMcNally/LandbaseOptimizer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRobinMcNally%2FLandbaseOptimizer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRobinMcNally%2FLandbaseOptimizer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 17664a450a6d2e6ccf1ebefbf8b7b93c8a4e7d05
[INFO] checking RobinMcNally/LandbaseOptimizer against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRobinMcNally%2FLandbaseOptimizer" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RobinMcNally/LandbaseOptimizer on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RobinMcNally/LandbaseOptimizer
[INFO] finished tweaking git repo https://github.com/RobinMcNally/LandbaseOptimizer
[INFO] tweaked toml for git repo https://github.com/RobinMcNally/LandbaseOptimizer written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/RobinMcNally/LandbaseOptimizer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-6/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 2b090ecdf2108e5ef1794822660a1deb6f838b732f9905e640bc8d7ecc55003e
[INFO] running `Command { std: "docker" "start" "-a" "2b090ecdf2108e5ef1794822660a1deb6f838b732f9905e640bc8d7ecc55003e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b090ecdf2108e5ef1794822660a1deb6f838b732f9905e640bc8d7ecc55003e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b090ecdf2108e5ef1794822660a1deb6f838b732f9905e640bc8d7ecc55003e", kill_on_drop: false }`
[INFO] [stdout] 2b090ecdf2108e5ef1794822660a1deb6f838b732f9905e640bc8d7ecc55003e
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06c69e4fde12efb259581b8a4bdbff5ff8e06f958a97bfbfc474dad34f735076
[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" "06c69e4fde12efb259581b8a4bdbff5ff8e06f958a97bfbfc474dad34f735076", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking landbase_optimizer v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `cardcolorfitness`
[INFO] [stdout]  --> src/support/genetic.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use support::fitness::{cardcolorfitness, cardcolorfitnesssum};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand`
[INFO] [stdout]  --> src/support/fitness.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IndependentSample`, `Range`
[INFO] [stdout]  --> src/support/fitness.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::distributions::{IndependentSample, Range};
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cardcolorfitness`
[INFO] [stdout]  --> src/support/genetic.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use support::fitness::{cardcolorfitness, cardcolorfitnesssum};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand`
[INFO] [stdout]  --> src/support/fitness.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IndependentSample`, `Range`
[INFO] [stdout]  --> src/support/fitness.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::distributions::{IndependentSample, Range};
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.93s
[INFO] running `Command { std: "docker" "inspect" "06c69e4fde12efb259581b8a4bdbff5ff8e06f958a97bfbfc474dad34f735076", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06c69e4fde12efb259581b8a4bdbff5ff8e06f958a97bfbfc474dad34f735076", kill_on_drop: false }`
[INFO] [stdout] 06c69e4fde12efb259581b8a4bdbff5ff8e06f958a97bfbfc474dad34f735076