[INFO] cloning repository https://github.com/kaaboaye/genetic_algorithm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kaaboaye/genetic_algorithm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaaboaye%2Fgenetic_algorithm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaaboaye%2Fgenetic_algorithm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d43b932ad05b1eca41dc4a091f5e34c973f31dca
[INFO] checking kaaboaye/genetic_algorithm against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkaaboaye%2Fgenetic_algorithm" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kaaboaye/genetic_algorithm
[INFO] finished tweaking git repo https://github.com/kaaboaye/genetic_algorithm
[INFO] tweaked toml for git repo https://github.com/kaaboaye/genetic_algorithm written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kaaboaye/genetic_algorithm on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kaaboaye/genetic_algorithm 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e5d534c13eb00a832fa05abe143f30f3271d88e2453d16d6a911bc8d0ab4320
[INFO] running `Command { std: "docker" "start" "-a" "2e5d534c13eb00a832fa05abe143f30f3271d88e2453d16d6a911bc8d0ab4320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e5d534c13eb00a832fa05abe143f30f3271d88e2453d16d6a911bc8d0ab4320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e5d534c13eb00a832fa05abe143f30f3271d88e2453d16d6a911bc8d0ab4320", kill_on_drop: false }`
[INFO] [stdout] 2e5d534c13eb00a832fa05abe143f30f3271d88e2453d16d6a911bc8d0ab4320
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d93e7dba194e534fc1c624739cb4adf3144ee922e3d0111a3b7a334effbaca38
[INFO] running `Command { std: "docker" "start" "-a" "d93e7dba194e534fc1c624739cb4adf3144ee922e3d0111a3b7a334effbaca38", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.11
[INFO] [stderr]    Compiling proc-macro-error v0.4.11
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking nalgebra v0.20.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling structopt-derive v0.4.4
[INFO] [stderr]     Checking structopt v0.3.11
[INFO] [stderr]     Checking genet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `EvaluationArena` is never constructed
[INFO] [stdout]   --> src/population/mod.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct EvaluationArena {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `declared` and `actual` are never read
[INFO] [stdout]    --> src/scenario.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |     IncorrectNumberOfObjects {
[INFO] [stdout]     |     ------------------------ fields in this variant
[INFO] [stdout] 159 |         declared: Number,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 160 |         actual: usize,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `StrategyLoadError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `minimal` and `total_weight` are never read
[INFO] [stdout]    --> src/scenario.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     TotalWeightToSmall {
[INFO] [stdout]     |     ------------------ fields in this variant
[INFO] [stdout] 164 |         minimal: Number,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 165 |         total_weight: Number,
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `StrategyLoadError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `minimal` and `total_size` are never read
[INFO] [stdout]    --> src/scenario.rs:169:9
[INFO] [stdout]     |
[INFO] [stdout] 168 |     TotalSizeToSmall {
[INFO] [stdout]     |     ---------------- fields in this variant
[INFO] [stdout] 169 |         minimal: Number,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 170 |         total_size: Number,
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `StrategyLoadError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         output_file: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 | /         #[structopt(help = "Input file")]
[INFO] [stdout] 44 | |         input_file: String,
[INFO] [stdout]    | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 | / ...   #[structopt(
[INFO] [stdout] 47 | | ...       help = "File to which best individuals from each generation will be saved. If no such file is provided result will be printed out"
[INFO] [stdout] 48 | | ...   )]
[INFO] [stdout] 49 | | ...   result_file: Option<String>,
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 | /         #[structopt(help = "Input file")]
[INFO] [stdout] 89 | |         input_file: String,
[INFO] [stdout]    | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `genet` (bin "genet" test) due to 4 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: struct `EvaluationArena` is never constructed
[INFO] [stdout]   --> src/population/mod.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct EvaluationArena {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `declared` and `actual` are never read
[INFO] [stdout]    --> src/scenario.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |     IncorrectNumberOfObjects {
[INFO] [stdout]     |     ------------------------ fields in this variant
[INFO] [stdout] 159 |         declared: Number,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 160 |         actual: usize,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `StrategyLoadError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `minimal` and `total_weight` are never read
[INFO] [stdout]    --> src/scenario.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     TotalWeightToSmall {
[INFO] [stdout]     |     ------------------ fields in this variant
[INFO] [stdout] 164 |         minimal: Number,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 165 |         total_weight: Number,
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `StrategyLoadError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `minimal` and `total_size` are never read
[INFO] [stdout]    --> src/scenario.rs:169:9
[INFO] [stdout]     |
[INFO] [stdout] 168 |     TotalSizeToSmall {
[INFO] [stdout]     |     ---------------- fields in this variant
[INFO] [stdout] 169 |         minimal: Number,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 170 |         total_size: Number,
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `StrategyLoadError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         output_file: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 | /         #[structopt(help = "Input file")]
[INFO] [stdout] 44 | |         input_file: String,
[INFO] [stdout]    | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 | / ...   #[structopt(
[INFO] [stdout] 47 | | ...       help = "File to which best individuals from each generation will be saved. If no such file is provided result will be printed out"
[INFO] [stdout] 48 | | ...   )]
[INFO] [stdout] 49 | | ...   result_file: Option<String>,
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 | /         #[structopt(help = "Input file")]
[INFO] [stdout] 89 | |         input_file: String,
[INFO] [stdout]    | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `genet` (bin "genet") due to 4 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d93e7dba194e534fc1c624739cb4adf3144ee922e3d0111a3b7a334effbaca38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d93e7dba194e534fc1c624739cb4adf3144ee922e3d0111a3b7a334effbaca38", kill_on_drop: false }`
[INFO] [stdout] d93e7dba194e534fc1c624739cb4adf3144ee922e3d0111a3b7a334effbaca38