[INFO] cloning repository https://github.com/rahulc29/randlite
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rahulc29/randlite" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frahulc29%2Frandlite", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frahulc29%2Frandlite'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66e2fe0a0726397af4f53ff99cd2aae3e8570fff
[INFO] checking rahulc29/randlite/66e2fe0a0726397af4f53ff99cd2aae3e8570fff against master#c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2 for pr-142712
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frahulc29%2Frandlite" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rahulc29/randlite
[INFO] finished tweaking git repo https://github.com/rahulc29/randlite
[INFO] tweaked toml for git repo https://github.com/rahulc29/randlite written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rahulc29/randlite on toolchain c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6316dbf9d4db50e0721fc00f03f43ad5c62bbc3d08cdf87f4c7547b414af1c7
[INFO] running `Command { std: "docker" "start" "-a" "a6316dbf9d4db50e0721fc00f03f43ad5c62bbc3d08cdf87f4c7547b414af1c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6316dbf9d4db50e0721fc00f03f43ad5c62bbc3d08cdf87f4c7547b414af1c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6316dbf9d4db50e0721fc00f03f43ad5c62bbc3d08cdf87f4c7547b414af1c7", kill_on_drop: false }`
[INFO] [stdout] a6316dbf9d4db50e0721fc00f03f43ad5c62bbc3d08cdf87f4c7547b414af1c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b85c90383b34e4695532b4441def5e9c8bb720351c7265635363588438bbe6d
[INFO] running `Command { std: "docker" "start" "-a" "8b85c90383b34e4695532b4441def5e9c8bb720351c7265635363588438bbe6d", kill_on_drop: false }`
[INFO] [stderr]     Checking randlite v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/acorn_generator.rs:13:38
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Box::new(AcornGenerator::new(20, (1 << 60), default_factory()))
[INFO] [stdout]    |                                      ^       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 13 -     Box::new(AcornGenerator::new(20, (1 << 60), default_factory()))
[INFO] [stdout] 13 +     Box::new(AcornGenerator::new(20, 1 << 60, default_factory()))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::acorn_generator::AcornGenerator`
[INFO] [stdout]   --> src/lib.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use crate::acorn_generator::AcornGenerator;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MTGenerator`
[INFO] [stdout]   --> src/lib.rs:14:45
[INFO] [stdout]    |
[INFO] [stdout] 14 |     use crate::mt_generator::{mt_generator, MTGenerator};
[INFO] [stdout]    |                                             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::seed_factory::default_factory`
[INFO] [stdout]   --> src/lib.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     use crate::seed_factory::default_factory;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/acorn_generator.rs:13:38
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Box::new(AcornGenerator::new(20, (1 << 60), default_factory()))
[INFO] [stdout]    |                                      ^       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 13 -     Box::new(AcornGenerator::new(20, (1 << 60), default_factory()))
[INFO] [stdout] 13 +     Box::new(AcornGenerator::new(20, 1 << 60, default_factory()))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `to_return` is never read
[INFO] [stdout]   --> src/mt_generator.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut to_return = 0u64;
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `to_return` is never read
[INFO] [stdout]   --> src/mt_generator.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut to_return = 0u64;
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `gen_bool` is never used
[INFO] [stdout]  --> src/generator.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Generator {
[INFO] [stdout]   |           --------- method in this trait
[INFO] [stdout] 2 |     fn gen_bool(&mut self) -> bool;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `state` is never used
[INFO] [stdout]   --> src/mt_generator.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl MTGenerator {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn state(&self) -> &Vec<u64> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AcornGenerator` is never constructed
[INFO] [stdout]  --> src/acorn_generator.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct AcornGenerator {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `acorn_generator` is never used
[INFO] [stdout]   --> src/acorn_generator.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn acorn_generator() -> Box<dyn Generator> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `next` are never used
[INFO] [stdout]   --> src/acorn_generator.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl AcornGenerator {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 17 |     pub fn new(k: usize, modulo: u64, factory: Box<dyn SeedFactory>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     fn next(&mut self) -> u64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Generator` is never used
[INFO] [stdout]  --> src/generator.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Generator {
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LinearCongruentialGenerator` is never constructed
[INFO] [stdout]  --> src/linear_congruential_generator.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct LinearCongruentialGenerator {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next` is never used
[INFO] [stdout]   --> src/linear_congruential_generator.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl LinearCongruentialGenerator {
[INFO] [stdout]    | -------------------------------- method in this implementation
[INFO] [stdout] 14 |     fn next(&mut self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bsd_generator` is never used
[INFO] [stdout]   --> src/linear_congruential_generator.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn bsd_generator() -> Box<dyn Generator> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `microsoft_generator` is never used
[INFO] [stdout]   --> src/linear_congruential_generator.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn microsoft_generator() -> Box<dyn Generator> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `SeedFactory` is never used
[INFO] [stdout]  --> src/seed_factory.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait SeedFactory {
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `default_factory` is never used
[INFO] [stdout]  --> src/seed_factory.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn default_factory() -> Box<dyn SeedFactory> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OSSeedFactory` is never constructed
[INFO] [stdout]   --> src/seed_factory.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct OSSeedFactory;
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MTGenerator` is never constructed
[INFO] [stdout]  --> src/mt_generator.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct MTGenerator {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mt_generator` is never used
[INFO] [stdout]   --> src/mt_generator.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn mt_generator() -> Box<dyn Generator> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `init_state`, `next`, and `state` are never used
[INFO] [stdout]   --> src/mt_generator.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl MTGenerator {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 21 |     pub fn new(seed: u32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     fn init_state(&self, seed: u64) -> Vec<u64> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     fn next(&mut self) -> u64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn state(&self) -> &Vec<u64> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AcornGenerator` is never constructed
[INFO] [stdout]  --> src/acorn_generator.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct AcornGenerator {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `acorn_generator` is never used
[INFO] [stdout]   --> src/acorn_generator.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn acorn_generator() -> Box<dyn Generator> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `next` are never used
[INFO] [stdout]   --> src/acorn_generator.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl AcornGenerator {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 17 |     pub fn new(k: usize, modulo: u64, factory: Box<dyn SeedFactory>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     fn next(&mut self) -> u64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "8b85c90383b34e4695532b4441def5e9c8bb720351c7265635363588438bbe6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b85c90383b34e4695532b4441def5e9c8bb720351c7265635363588438bbe6d", kill_on_drop: false }`
[INFO] [stdout] 8b85c90383b34e4695532b4441def5e9c8bb720351c7265635363588438bbe6d