[INFO] cloning repository https://github.com/ashelleyPurdue/rust_prng
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ashelleyPurdue/rust_prng" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FashelleyPurdue%2Frust_prng", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FashelleyPurdue%2Frust_prng'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 948fa6b1a85743cb932169b13ec47ea1c21fc390
[INFO] checking ashelleyPurdue/rust_prng against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FashelleyPurdue%2Frust_prng" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ashelleyPurdue/rust_prng on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ashelleyPurdue/rust_prng
[INFO] finished tweaking git repo https://github.com/ashelleyPurdue/rust_prng
[INFO] tweaked toml for git repo https://github.com/ashelleyPurdue/rust_prng written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/ashelleyPurdue/rust_prng already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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] e00c571db9159331d8d4550cb7f2315fca707e4de8433033403dae68610d009b
[INFO] running `Command { std: "docker" "start" "-a" "e00c571db9159331d8d4550cb7f2315fca707e4de8433033403dae68610d009b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e00c571db9159331d8d4550cb7f2315fca707e4de8433033403dae68610d009b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e00c571db9159331d8d4550cb7f2315fca707e4de8433033403dae68610d009b", kill_on_drop: false }`
[INFO] [stdout] e00c571db9159331d8d4550cb7f2315fca707e4de8433033403dae68610d009b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5321cee7f89518c22891a6e0cb73ddd29f5ce43e7c92bab8816fd0aec8021200
[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" "5321cee7f89518c22891a6e0cb73ddd29f5ce43e7c92bab8816fd0aec8021200", kill_on_drop: false }`
[INFO] [stderr]     Checking rng_struct v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `seed`
[INFO] [stdout]  --> src/random.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     seed: u64,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LARGEST_U64_PRIME`
[INFO] [stdout]  --> src/hashing.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const LARGEST_U64_PRIME: u64 = 2305843009213693951;        // Equivalent to 61 straight 1's in binary
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mod_exp_hash`
[INFO] [stdout]   --> src/hashing.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn mod_exp_hash(num: u64) -> u64
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mod_exp`
[INFO] [stdout]   --> src/hashing.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn mod_exp(base: u64, exp: u64, modulo: u64) -> u64
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `seed`
[INFO] [stdout]  --> src/random.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     seed: u64,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LARGEST_U64_PRIME`
[INFO] [stdout]  --> src/hashing.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const LARGEST_U64_PRIME: u64 = 2305843009213693951;        // Equivalent to 61 straight 1's in binary
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mod_exp_hash`
[INFO] [stdout]   --> src/hashing.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn mod_exp_hash(num: u64) -> u64
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mod_exp`
[INFO] [stdout]   --> src/hashing.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn mod_exp(base: u64, exp: u64, modulo: u64) -> u64
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "5321cee7f89518c22891a6e0cb73ddd29f5ce43e7c92bab8816fd0aec8021200", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5321cee7f89518c22891a6e0cb73ddd29f5ce43e7c92bab8816fd0aec8021200", kill_on_drop: false }`
[INFO] [stdout] 5321cee7f89518c22891a6e0cb73ddd29f5ce43e7c92bab8816fd0aec8021200