[INFO] cloning repository https://github.com/Torrencem/addcomb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Torrencem/addcomb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTorrencem%2Faddcomb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTorrencem%2Faddcomb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3ffaa2059ae21c56efd519ae013f3a30db662409
[INFO] checking Torrencem/addcomb against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTorrencem%2Faddcomb" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Torrencem/addcomb on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/.cargo/config
[INFO] started tweaking git repo https://github.com/Torrencem/addcomb
[INFO] finished tweaking git repo https://github.com/Torrencem/addcomb
[INFO] tweaked toml for git repo https://github.com/Torrencem/addcomb written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Torrencem/addcomb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f917a199e2e1aa0eada1d781f8e57b6d7c1887895aa9b8f1585583cafdc7a273
[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" "f917a199e2e1aa0eada1d781f8e57b6d7c1887895aa9b8f1585583cafdc7a273", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f917a199e2e1aa0eada1d781f8e57b6d7c1887895aa9b8f1585583cafdc7a273", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f917a199e2e1aa0eada1d781f8e57b6d7c1887895aa9b8f1585583cafdc7a273", kill_on_drop: false }`
[INFO] [stdout] f917a199e2e1aa0eada1d781f8e57b6d7c1887895aa9b8f1585583cafdc7a273
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11e7acd5b4dd3720ca189431a6f153fdb7e0d9592c81f0dbba6a8aad6ace80e3
[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" "11e7acd5b4dd3720ca189431a6f153fdb7e0d9592c81f0dbba6a8aad6ace80e3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]     Checking addcomb v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stdout] warning: unused import: `comb::chapter_a::*`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use comb::chapter_a::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `comb::chapter_b::*`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use comb::chapter_b::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `comb::chapter_c::*`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use comb::chapter_c::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `comb::chapter_d::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use comb::chapter_d::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `comb::chapter_e::*`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use comb::chapter_e::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `comb::chapter_f::*`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use comb::chapter_f::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `comb::chapter_g::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use comb::chapter_g::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut greatest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |             greatest_set = a;
[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: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut greatest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             greatest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let mut greatest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |             greatest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let mut greatest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             greatest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut greatest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |             greatest_set = a;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:113:9
[INFO] [stdout]     |
[INFO] [stdout] 113 |     let mut greatest_set = empty_set();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:123:13
[INFO] [stdout]     |
[INFO] [stdout] 123 |             greatest_set = a;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let mut greatest_set = empty_set();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:143:13
[INFO] [stdout]     |
[INFO] [stdout] 143 |             greatest_set = a;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 153 |     let mut greatest_set = empty_set();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:163:13
[INFO] [stdout]     |
[INFO] [stdout] 163 |             greatest_set = a;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut smallest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |             smallest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut smallest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             smallest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let mut smallest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             smallest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let mut smallest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |             smallest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let mut smallest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             smallest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut smallest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |             smallest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]    --> src/comb/chapter_d/mod.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let mut smallest_set = empty_set();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]    --> src/comb/chapter_d/mod.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |             smallest_set = a;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]    --> src/comb/chapter_d/mod.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |     let mut smallest_set = empty_set();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]    --> src/comb/chapter_d/mod.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |             smallest_set = a;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_os v0.1.2
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stdout] warning: unused import: `comb::chapter_a::*`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use comb::chapter_a::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `comb::chapter_b::*`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use comb::chapter_b::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `comb::chapter_c::*`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use comb::chapter_c::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `comb::chapter_d::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use comb::chapter_d::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `comb::chapter_e::*`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use comb::chapter_e::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `comb::chapter_f::*`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use comb::chapter_f::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `comb::chapter_g::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use comb::chapter_g::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut greatest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |             greatest_set = a;
[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: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut greatest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             greatest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let mut greatest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |             greatest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let mut greatest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             greatest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_a/mod.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut greatest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |             greatest_set = a;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:113:9
[INFO] [stdout]     |
[INFO] [stdout] 113 |     let mut greatest_set = empty_set();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:123:13
[INFO] [stdout]     |
[INFO] [stdout] 123 |             greatest_set = a;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let mut greatest_set = empty_set();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:143:13
[INFO] [stdout]     |
[INFO] [stdout] 143 |             greatest_set = a;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `greatest_set` is assigned to, but never used
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 153 |     let mut greatest_set = empty_set();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_greatest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `greatest_set` is never read
[INFO] [stdout]    --> src/comb/chapter_a/mod.rs:163:13
[INFO] [stdout]     |
[INFO] [stdout] 163 |             greatest_set = a;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut smallest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |             smallest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut smallest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             smallest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let mut smallest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             smallest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let mut smallest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |             smallest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let mut smallest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             smallest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     let mut smallest_set = empty_set();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]   --> src/comb/chapter_d/mod.rs:99:13
[INFO] [stdout]    |
[INFO] [stdout] 99 |             smallest_set = a;
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]    --> src/comb/chapter_d/mod.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |     let mut smallest_set = empty_set();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]    --> src/comb/chapter_d/mod.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |             smallest_set = a;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `smallest_set` is assigned to, but never used
[INFO] [stdout]    --> src/comb/chapter_d/mod.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |     let mut smallest_set = empty_set();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_smallest_set` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `smallest_set` is never read
[INFO] [stdout]    --> src/comb/chapter_d/mod.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |             smallest_set = a;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.65s
[INFO] running `Command { std: "docker" "inspect" "11e7acd5b4dd3720ca189431a6f153fdb7e0d9592c81f0dbba6a8aad6ace80e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11e7acd5b4dd3720ca189431a6f153fdb7e0d9592c81f0dbba6a8aad6ace80e3", kill_on_drop: false }`
[INFO] [stdout] 11e7acd5b4dd3720ca189431a6f153fdb7e0d9592c81f0dbba6a8aad6ace80e3