[INFO] cloning repository https://github.com/efharkin/unlucky
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/efharkin/unlucky" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fefharkin%2Funlucky", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fefharkin%2Funlucky'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cf631560a188a25d5dfbf21fb883cc39173b7d31
[INFO] checking efharkin/unlucky against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fefharkin%2Funlucky" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/efharkin/unlucky on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/efharkin/unlucky
[INFO] finished tweaking git repo https://github.com/efharkin/unlucky
[INFO] tweaked toml for git repo https://github.com/efharkin/unlucky written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/efharkin/unlucky already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cd2d665ef7210640832f50fea5ba6bb3545c124ec43e49d6d97e083c53c64dd
[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" "0cd2d665ef7210640832f50fea5ba6bb3545c124ec43e49d6d97e083c53c64dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cd2d665ef7210640832f50fea5ba6bb3545c124ec43e49d6d97e083c53c64dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cd2d665ef7210640832f50fea5ba6bb3545c124ec43e49d6d97e083c53c64dd", kill_on_drop: false }`
[INFO] [stdout] 0cd2d665ef7210640832f50fea5ba6bb3545c124ec43e49d6d97e083c53c64dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e58c86d4363842eb44779810144023b8d2eae692440e2b01361d7495e9b8c1fe
[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" "e58c86d4363842eb44779810144023b8d2eae692440e2b01361d7495e9b8c1fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]     Checking how-bad-was-my-roll v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `num_dice`
[INFO] [stdout]  --> src/distributions.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn roll_distribution(num_dice: u32, num_sides: u32) -> Vec<f64> {
[INFO] [stdout]   |                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_dice`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_sides`
[INFO] [stdout]  --> src/distributions.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn roll_distribution(num_dice: u32, num_sides: u32) -> Vec<f64> {
[INFO] [stdout]   |                                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_sides`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `roll_distribution`
[INFO] [stdout]  --> src/distributions.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn roll_distribution(num_dice: u32, num_sides: u32) -> Vec<f64> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_capacity`
[INFO] [stdout]   --> src/distributions.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn with_capacity(capacity: usize) -> ProbabilityMassFunction {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/distributions.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn push(&mut self, value: u64, probability: f64) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> src/distributions.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn iter<'a>(&'a self) -> impl Iterator + 'a {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/distributions.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn new(pmf: &'a ProbabilityMassFunction) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_dice`
[INFO] [stdout]  --> src/distributions.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn roll_distribution(num_dice: u32, num_sides: u32) -> Vec<f64> {
[INFO] [stdout]   |                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_dice`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_sides`
[INFO] [stdout]  --> src/distributions.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn roll_distribution(num_dice: u32, num_sides: u32) -> Vec<f64> {
[INFO] [stdout]   |                                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_sides`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_capacity`
[INFO] [stdout]   --> src/distributions.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn with_capacity(capacity: usize) -> ProbabilityMassFunction {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/distributions.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn push(&mut self, value: u64, probability: f64) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> src/distributions.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn iter<'a>(&'a self) -> impl Iterator + 'a {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/distributions.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn new(pmf: &'a ProbabilityMassFunction) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.33s
[INFO] running `Command { std: "docker" "inspect" "e58c86d4363842eb44779810144023b8d2eae692440e2b01361d7495e9b8c1fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e58c86d4363842eb44779810144023b8d2eae692440e2b01361d7495e9b8c1fe", kill_on_drop: false }`
[INFO] [stdout] e58c86d4363842eb44779810144023b8d2eae692440e2b01361d7495e9b8c1fe