[INFO] cloning repository https://github.com/DarrenRJ/Euler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DarrenRJ/Euler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarrenRJ%2FEuler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarrenRJ%2FEuler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e0a4561ac291899ec025d0ab9f95dbc2dd7a2bbf
[INFO] testing DarrenRJ/Euler against 1.75.0 for beta-1.76-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarrenRJ%2FEuler" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DarrenRJ/Euler on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DarrenRJ/Euler
[INFO] finished tweaking git repo https://github.com/DarrenRJ/Euler
[INFO] tweaked toml for git repo https://github.com/DarrenRJ/Euler written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/DarrenRJ/Euler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.2.0
[INFO] [stderr]   Downloaded hamming v0.1.3
[INFO] [stderr]   Downloaded fuchsia-zircon v0.2.1
[INFO] [stderr]   Downloaded num-rational v0.1.39
[INFO] [stderr]   Downloaded rand v0.3.17
[INFO] [stderr]   Downloaded num-traits v0.1.40
[INFO] [stderr]   Downloaded num v0.1.40
[INFO] [stderr]   Downloaded time v0.1.38
[INFO] [stderr]   Downloaded libc v0.2.33
[INFO] [stderr]   Downloaded num-bigint v0.1.40
[INFO] [stderr]   Downloaded primal-estimate v0.2.1
[INFO] [stderr]   Downloaded redox_syscall v0.1.31
[INFO] [stderr]   Downloaded primal v0.2.3
[INFO] [stderr]   Downloaded num-complex v0.1.40
[INFO] [stderr]   Downloaded primal-check v0.2.2
[INFO] [stderr]   Downloaded primal-bit v0.2.4
[INFO] [stderr]   Downloaded smallvec v0.4.4
[INFO] [stderr]   Downloaded primal-sieve v0.2.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3edb10a29e9b00dde6f5967eecb1b3cdb610e40600f792007b8e3aa5e1d25c1
[INFO] running `Command { std: "docker" "start" "-a" "c3edb10a29e9b00dde6f5967eecb1b3cdb610e40600f792007b8e3aa5e1d25c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3edb10a29e9b00dde6f5967eecb1b3cdb610e40600f792007b8e3aa5e1d25c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3edb10a29e9b00dde6f5967eecb1b3cdb610e40600f792007b8e3aa5e1d25c1", kill_on_drop: false }`
[INFO] [stdout] c3edb10a29e9b00dde6f5967eecb1b3cdb610e40600f792007b8e3aa5e1d25c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fad82725a05137e444325eb45638fc4466e3b7c581f09374c2672bef3567252b
[INFO] running `Command { std: "docker" "start" "-a" "fad82725a05137e444325eb45638fc4466e3b7c581f09374c2672bef3567252b", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling libc v0.2.33
[INFO] [stderr]    Compiling hamming v0.1.3
[INFO] [stderr]    Compiling smallvec v0.4.4
[INFO] [stderr]    Compiling primal-estimate v0.2.1
[INFO] [stderr]    Compiling primal-bit v0.2.4
[INFO] [stderr]    Compiling rand v0.3.17
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling primal-sieve v0.2.7
[INFO] [stderr]    Compiling num-integer v0.1.35
[INFO] [stderr]    Compiling num-complex v0.1.40
[INFO] [stderr]    Compiling num-iter v0.1.34
[INFO] [stderr]    Compiling num-bigint v0.1.40
[INFO] [stderr]    Compiling num-rational v0.1.39
[INFO] [stderr]    Compiling num v0.1.40
[INFO] [stderr]    Compiling primal-check v0.2.2
[INFO] [stderr]    Compiling primal v0.2.3
[INFO] [stderr]    Compiling euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/util.rs:238:64
[INFO] [stdout]     |
[INFO] [stdout] 238 |         if let Ok(index) = d_factors.binary_search(&(n_factors[(n_factors.len() - (i + 1))])) {
[INFO] [stdout]     |                                                                ^                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 238 -         if let Ok(index) = d_factors.binary_search(&(n_factors[(n_factors.len() - (i + 1))])) {
[INFO] [stdout] 238 +         if let Ok(index) = d_factors.binary_search(&(n_factors[n_factors.len() - (i + 1)])) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/solutions.rs:2763:22
[INFO] [stdout]      |
[INFO] [stdout] 2763 |         if let Some( mut update ) = matches.get_mut(&sorted) {
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.77s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "fad82725a05137e444325eb45638fc4466e3b7c581f09374c2672bef3567252b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fad82725a05137e444325eb45638fc4466e3b7c581f09374c2672bef3567252b", kill_on_drop: false }`
[INFO] [stdout] fad82725a05137e444325eb45638fc4466e3b7c581f09374c2672bef3567252b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90fe0c2c1feb7e8a5bf4ba06c30bcfe0ca31e61521728f8c9d8bff9733b7ba33
[INFO] running `Command { std: "docker" "start" "-a" "90fe0c2c1feb7e8a5bf4ba06c30bcfe0ca31e61521728f8c9d8bff9733b7ba33", kill_on_drop: false }`
[INFO] [stderr]    Compiling euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/util.rs:238:64
[INFO] [stdout]     |
[INFO] [stdout] 238 |         if let Ok(index) = d_factors.binary_search(&(n_factors[(n_factors.len() - (i + 1))])) {
[INFO] [stdout]     |                                                                ^                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 238 -         if let Ok(index) = d_factors.binary_search(&(n_factors[(n_factors.len() - (i + 1))])) {
[INFO] [stdout] 238 +         if let Ok(index) = d_factors.binary_search(&(n_factors[n_factors.len() - (i + 1)])) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/solutions.rs:2763:22
[INFO] [stdout]      |
[INFO] [stdout] 2763 |         if let Some( mut update ) = matches.get_mut(&sorted) {
[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: function `test_factors` is never used
[INFO] [stdout]    --> src/factors.rs:170:8
[INFO] [stdout]     |
[INFO] [stdout] 170 |     fn test_factors() {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_divisor_count` is never used
[INFO] [stdout]    --> src/factors.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn test_divisor_count() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_proper_divisors` is never used
[INFO] [stdout]    --> src/factors.rs:189:8
[INFO] [stdout]     |
[INFO] [stdout] 189 |     fn test_proper_divisors() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_sum_of_proper_divisors` is never used
[INFO] [stdout]    --> src/factors.rs:200:8
[INFO] [stdout]     |
[INFO] [stdout] 200 |     fn test_sum_of_proper_divisors() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "90fe0c2c1feb7e8a5bf4ba06c30bcfe0ca31e61521728f8c9d8bff9733b7ba33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90fe0c2c1feb7e8a5bf4ba06c30bcfe0ca31e61521728f8c9d8bff9733b7ba33", kill_on_drop: false }`
[INFO] [stdout] 90fe0c2c1feb7e8a5bf4ba06c30bcfe0ca31e61521728f8c9d8bff9733b7ba33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 667a94998616aea8b717320577b30e3f651edd390bfd3714db52e0216cabacea
[INFO] running `Command { std: "docker" "start" "-a" "667a94998616aea8b717320577b30e3f651edd390bfd3714db52e0216cabacea", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around index expression
[INFO] [stderr]    --> src/util.rs:238:64
[INFO] [stderr]     |
[INFO] [stderr] 238 |         if let Ok(index) = d_factors.binary_search(&(n_factors[(n_factors.len() - (i + 1))])) {
[INFO] [stderr]     |                                                                ^                         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 238 -         if let Ok(index) = d_factors.binary_search(&(n_factors[(n_factors.len() - (i + 1))])) {
[INFO] [stderr] 238 +         if let Ok(index) = d_factors.binary_search(&(n_factors[n_factors.len() - (i + 1)])) {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/solutions.rs:2763:22
[INFO] [stderr]      |
[INFO] [stderr] 2763 |         if let Some( mut update ) = matches.get_mut(&sorted) {
[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: function `test_factors` is never used
[INFO] [stderr]    --> src/factors.rs:170:8
[INFO] [stderr]     |
[INFO] [stderr] 170 |     fn test_factors() {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_divisor_count` is never used
[INFO] [stderr]    --> src/factors.rs:179:8
[INFO] [stderr]     |
[INFO] [stderr] 179 |     fn test_divisor_count() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_proper_divisors` is never used
[INFO] [stderr]    --> src/factors.rs:189:8
[INFO] [stderr]     |
[INFO] [stderr] 189 |     fn test_proper_divisors() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_sum_of_proper_divisors` is never used
[INFO] [stderr]    --> src/factors.rs:200:8
[INFO] [stderr]     |
[INFO] [stderr] 200 |     fn test_sum_of_proper_divisors() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `euler` (bin "euler" test) generated 6 warnings (run `cargo fix --bin "euler" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/euler-e2e9c3c51137cc44)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test choose::test::test_choose ... ok
[INFO] [stdout] test factors::test::test_prime_factors ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "667a94998616aea8b717320577b30e3f651edd390bfd3714db52e0216cabacea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "667a94998616aea8b717320577b30e3f651edd390bfd3714db52e0216cabacea", kill_on_drop: false }`
[INFO] [stdout] 667a94998616aea8b717320577b30e3f651edd390bfd3714db52e0216cabacea
