[INFO] updating cached repository https://github.com/Tazoeur/projecteuler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d03ead78fbc180812af3d7b482dd9dd3e4c2125f
[INFO] testing Tazoeur/projecteuler against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTazoeur%2Fprojecteuler" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Tazoeur/projecteuler on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Tazoeur/projecteuler
[INFO] finished tweaking git repo https://github.com/Tazoeur/projecteuler
[INFO] tweaked toml for git repo https://github.com/Tazoeur/projecteuler written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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] d31bc0891a51801997641e1148b9ae774fec8d5e17cfb0ec3e53b4519c302300
[INFO] running `Command { std: "docker" "start" "-a" "d31bc0891a51801997641e1148b9ae774fec8d5e17cfb0ec3e53b4519c302300", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d31bc0891a51801997641e1148b9ae774fec8d5e17cfb0ec3e53b4519c302300", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d31bc0891a51801997641e1148b9ae774fec8d5e17cfb0ec3e53b4519c302300", kill_on_drop: false }`
[INFO] [stdout] d31bc0891a51801997641e1148b9ae774fec8d5e17cfb0ec3e53b4519c302300
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e3c78d15602d6b85055b883f3e55d43553c13b905474dc9495d2d802565ccd5
[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" "0e3c78d15602d6b85055b883f3e55d43553c13b905474dc9495d2d802565ccd5", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling gimli v0.22.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling object v0.20.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling elastic-array-plus v0.10.0
[INFO] [stderr]    Compiling etcommon-hexutil v0.2.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling etcommon-rlp v0.2.5
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling etcommon-bigint v0.2.10
[INFO] [stderr]    Compiling addr2line v0.13.0
[INFO] [stderr]    Compiling backtrace v0.3.50
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling fraction v0.6.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling plotlib v0.4.0
[INFO] [stderr]    Compiling projecteuler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/hugeint/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let mut result = 0;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `self_value` is never read
[INFO] [stdout]   --> src/hugeint/mod.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut self_value = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n_value` is never read
[INFO] [stdout]   --> src/hugeint/mod.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut n_value = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `report` is never read
[INFO] [stdout]   --> src/hugeint/mod.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             report = 0;
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/hugeint/mod.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |             for v in 0..value {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/hugeint/mod.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |             for j in 0..i {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/hugeint/mod.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         for i in 1..n {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total` is never read
[INFO] [stdout]  --> src/coin_sums.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut total: u64 = 0;
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `p_str` is never read
[INFO] [stdout]   --> src/pandigital_products.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let mut p_str = String::new();
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tu`
[INFO] [stdout]    --> src/pandigital_products.rs:145:10
[INFO] [stdout]     |
[INFO] [stdout] 145 |     for (tu, p) in &tab {
[INFO] [stdout]     |          ^^ help: if this is intentional, prefix it with an underscore: `_tu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tab`
[INFO] [stdout]  --> src/quadratic_primes.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut tab: Vec<(i64, i64)> = Vec::new();
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tab`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n` is never read
[INFO] [stdout]  --> src/quadratic_primes.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut n: u64 = 0;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `eq` is never read
[INFO] [stdout]  --> src/quadratic_primes.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut eq: i64 = 0;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `abs_eq` is never read
[INFO] [stdout]  --> src/quadratic_primes.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut abs_eq: u64 = 0;
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/quadratic_primes.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut tab: Vec<(i64, i64)> = Vec::new();
[INFO] [stdout]   |         ----^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/digit_fifth_powers.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     Page::single(&v).save("scatter.svg");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lib_euler::utils::math`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use lib_euler::utils::math;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 39.94s
[INFO] running `Command { std: "docker" "inspect" "0e3c78d15602d6b85055b883f3e55d43553c13b905474dc9495d2d802565ccd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e3c78d15602d6b85055b883f3e55d43553c13b905474dc9495d2d802565ccd5", kill_on_drop: false }`
[INFO] [stdout] 0e3c78d15602d6b85055b883f3e55d43553c13b905474dc9495d2d802565ccd5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c68c5eabfd804892c5f14874d3d20f8ca3191e9fcf23ba6fd7579b5655f7b4c9
[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" "c68c5eabfd804892c5f14874d3d20f8ca3191e9fcf23ba6fd7579b5655f7b4c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling projecteuler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/hugeint/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let mut result = 0;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `self_value` is never read
[INFO] [stdout]   --> src/hugeint/mod.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut self_value = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n_value` is never read
[INFO] [stdout]   --> src/hugeint/mod.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut n_value = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `report` is never read
[INFO] [stdout]   --> src/hugeint/mod.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             report = 0;
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/hugeint/mod.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |             for v in 0..value {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/hugeint/mod.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |             for j in 0..i {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/hugeint/mod.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         for i in 1..n {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total` is never read
[INFO] [stdout]  --> src/coin_sums.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut total: u64 = 0;
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `p_str` is never read
[INFO] [stdout]   --> src/pandigital_products.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let mut p_str = String::new();
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tu`
[INFO] [stdout]    --> src/pandigital_products.rs:145:10
[INFO] [stdout]     |
[INFO] [stdout] 145 |     for (tu, p) in &tab {
[INFO] [stdout]     |          ^^ help: if this is intentional, prefix it with an underscore: `_tu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tab`
[INFO] [stdout]  --> src/quadratic_primes.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut tab: Vec<(i64, i64)> = Vec::new();
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tab`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n` is never read
[INFO] [stdout]  --> src/quadratic_primes.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut n: u64 = 0;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `eq` is never read
[INFO] [stdout]  --> src/quadratic_primes.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut eq: i64 = 0;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `abs_eq` is never read
[INFO] [stdout]  --> src/quadratic_primes.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut abs_eq: u64 = 0;
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/quadratic_primes.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut tab: Vec<(i64, i64)> = Vec::new();
[INFO] [stdout]   |         ----^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/digit_fifth_powers.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     Page::single(&v).save("scatter.svg");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lib_euler::utils::math`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use lib_euler::utils::math;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/hugeint/mod.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let mut result = 0;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `self_value` is never read
[INFO] [stdout]   --> src/hugeint/mod.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut self_value = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n_value` is never read
[INFO] [stdout]   --> src/hugeint/mod.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut n_value = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `report` is never read
[INFO] [stdout]   --> src/hugeint/mod.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             report = 0;
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/hugeint/mod.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |             for v in 0..value {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/hugeint/mod.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 80 |             for j in 0..i {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/hugeint/mod.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         for i in 1..n {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total` is never read
[INFO] [stdout]  --> src/coin_sums.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut total: u64 = 0;
[INFO] [stdout]   |         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `p_str` is never read
[INFO] [stdout]   --> src/pandigital_products.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let mut p_str = String::new();
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tu`
[INFO] [stdout]    --> src/pandigital_products.rs:145:10
[INFO] [stdout]     |
[INFO] [stdout] 145 |     for (tu, p) in &tab {
[INFO] [stdout]     |          ^^ help: if this is intentional, prefix it with an underscore: `_tu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tab`
[INFO] [stdout]  --> src/quadratic_primes.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut tab: Vec<(i64, i64)> = Vec::new();
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tab`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n` is never read
[INFO] [stdout]  --> src/quadratic_primes.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut n: u64 = 0;
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `eq` is never read
[INFO] [stdout]  --> src/quadratic_primes.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut eq: i64 = 0;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `abs_eq` is never read
[INFO] [stdout]  --> src/quadratic_primes.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut abs_eq: u64 = 0;
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/quadratic_primes.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut tab: Vec<(i64, i64)> = Vec::new();
[INFO] [stdout]   |         ----^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/digit_fifth_powers.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     Page::single(&v).save("scatter.svg");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "c68c5eabfd804892c5f14874d3d20f8ca3191e9fcf23ba6fd7579b5655f7b4c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c68c5eabfd804892c5f14874d3d20f8ca3191e9fcf23ba6fd7579b5655f7b4c9", kill_on_drop: false }`
[INFO] [stdout] c68c5eabfd804892c5f14874d3d20f8ca3191e9fcf23ba6fd7579b5655f7b4c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 41a417e33392ab33ac54dc91f7277265a52712d5afc211f1d39e64f452a6f48e
[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" "41a417e33392ab33ac54dc91f7277265a52712d5afc211f1d39e64f452a6f48e", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]   --> src/hugeint/mod.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |         let mut result = 0;
[INFO] [stderr]    |             ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]   --> src/hugeint/mod.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |         let mut result = 0;
[INFO] [stderr]    |             ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `self_value` is never read
[INFO] [stderr]   --> src/hugeint/mod.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let mut self_value = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `self_value` is never read
[INFO] [stderr]   --> src/hugeint/mod.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let mut self_value = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `n_value` is never read
[INFO] [stderr]   --> src/hugeint/mod.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut n_value = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `n_value` is never read
[INFO] [stderr]   --> src/hugeint/mod.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut n_value = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `report` is never read
[INFO] [stderr]   --> src/hugeint/mod.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |             report = 0;
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `report` is never read
[INFO] [stderr]   --> src/hugeint/mod.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |             report = 0;
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/hugeint/mod.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |             for v in 0..value {
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/hugeint/mod.rs:76:17
[INFO] [stderr]    |
[INFO] [stderr] 76 |             for v in 0..value {
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]   --> src/hugeint/mod.rs:80:17
[INFO] [stderr]    |
[INFO] [stderr] 80 |             for j in 0..i {
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/hugeint/mod.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |         for i in 1..n {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]   --> src/hugeint/mod.rs:80:17
[INFO] [stderr]    |
[INFO] [stderr] 80 |             for j in 0..i {
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `total` is never read
[INFO] [stderr]  --> src/coin_sums.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut total: u64 = 0;
[INFO] [stderr]   |         ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/hugeint/mod.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |         for i in 1..n {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `p_str` is never read
[INFO] [stderr]   --> src/pandigital_products.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |     let mut p_str = String::new();
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `total` is never read
[INFO] [stderr]  --> src/coin_sums.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut total: u64 = 0;
[INFO] [stderr]   |         ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tu`
[INFO] [stderr]    --> src/pandigital_products.rs:145:10
[INFO] [stderr]     |
[INFO] [stderr] 145 |     for (tu, p) in &tab {
[INFO] [stderr]     |          ^^ help: if this is intentional, prefix it with an underscore: `_tu`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `p_str` is never read
[INFO] [stderr]   --> src/pandigital_products.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |     let mut p_str = String::new();
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tab`
[INFO] [stderr]  --> src/quadratic_primes.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut tab: Vec<(i64, i64)> = Vec::new();
[INFO] [stderr]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tab`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tu`
[INFO] [stderr]    --> src/pandigital_products.rs:145:10
[INFO] [stderr]     |
[INFO] [stderr] 145 |     for (tu, p) in &tab {
[INFO] [stderr]     |          ^^ help: if this is intentional, prefix it with an underscore: `_tu`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `n` is never read
[INFO] [stderr]  --> src/quadratic_primes.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut n: u64 = 0;
[INFO] [stderr]   |         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tab`
[INFO] [stderr]  --> src/quadratic_primes.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut tab: Vec<(i64, i64)> = Vec::new();
[INFO] [stderr]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tab`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `eq` is never read
[INFO] [stderr]  --> src/quadratic_primes.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut eq: i64 = 0;
[INFO] [stderr]   |         ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `n` is never read
[INFO] [stderr]  --> src/quadratic_primes.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut n: u64 = 0;
[INFO] [stderr]   |         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `abs_eq` is never read
[INFO] [stderr]  --> src/quadratic_primes.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut abs_eq: u64 = 0;
[INFO] [stderr]   |         ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `eq` is never read
[INFO] [stderr]  --> src/quadratic_primes.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut eq: i64 = 0;
[INFO] [stderr]   |         ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/quadratic_primes.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut tab: Vec<(i64, i64)> = Vec::new();
[INFO] [stderr]   |         ----^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `abs_eq` is never read
[INFO] [stderr]  --> src/quadratic_primes.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut abs_eq: u64 = 0;
[INFO] [stderr]   |         ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/digit_fifth_powers.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     Page::single(&v).save("scatter.svg");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/quadratic_primes.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut tab: Vec<(i64, i64)> = Vec::new();
[INFO] [stderr]   |         ----^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/digit_fifth_powers.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     Page::single(&v).save("scatter.svg");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `lib_euler::utils::math`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use lib_euler::utils::math;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lib_euler-86731f152b83ddad
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/projecteuler-bef31997226e9e0b
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lib_euler
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/utils/math.rs - utils::math::combinatorics_permutation (line 98) ... FAILED
[INFO] [stdout] test src/utils/math.rs - utils::math::combinatorics_combination (line 50) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/utils/math.rs - utils::math::combinatorics_permutation (line 98) stdout ----
[INFO] [stdout] error: expected identifier, found keyword `let`
[INFO] [stdout]  --> src/utils/math.rs:99:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | ex : let p = 2 and elements = [1, 2, 3, 4, 5]; the result will be
[INFO] [stdout]   |      ^^^ expected identifier, found keyword
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found keyword `let`
[INFO] [stdout]  --> src/utils/math.rs:99:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | ex : let p = 2 and elements = [1, 2, 3, 4, 5]; the result will be
[INFO] [stdout]   |    - ^^^ expected type
[INFO] [stdout]   |    |
[INFO] [stdout]   |    tried to parse a type due to this type ascription
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#![feature(type_ascription)]` lets you annotate an expression with a type: `<expr>: <type>`
[INFO] [stdout]   = note: see issue #23416 <https://github.com/rust-lang/rust/issues/23416> for more information
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/utils/math.rs - utils::math::combinatorics_combination (line 50) stdout ----
[INFO] [stdout] error: expected identifier, found keyword `let`
[INFO] [stdout]  --> src/utils/math.rs:51:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | ex : let p = 2 and elements = [1, 2, 3, 4, 5]; the result will be
[INFO] [stdout]   |      ^^^ expected identifier, found keyword
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found keyword `let`
[INFO] [stdout]  --> src/utils/math.rs:51:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | ex : let p = 2 and elements = [1, 2, 3, 4, 5]; the result will be
[INFO] [stdout]   |    - ^^^ expected type
[INFO] [stdout]   |    |
[INFO] [stdout]   |    tried to parse a type due to this type ascription
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#![feature(type_ascription)]` lets you annotate an expression with a type: `<expr>: <type>`
[INFO] [stdout]   = note: see issue #23416 <https://github.com/rust-lang/rust/issues/23416> for more information
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/utils/math.rs - utils::math::combinatorics_combination (line 50)
[INFO] [stdout]     src/utils/math.rs - utils::math::combinatorics_permutation (line 98)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "41a417e33392ab33ac54dc91f7277265a52712d5afc211f1d39e64f452a6f48e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41a417e33392ab33ac54dc91f7277265a52712d5afc211f1d39e64f452a6f48e", kill_on_drop: false }`
[INFO] [stdout] 41a417e33392ab33ac54dc91f7277265a52712d5afc211f1d39e64f452a6f48e