[INFO] cloning repository https://github.com/maxdotdotg/rust_exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maxdotdotg/rust_exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxdotdotg%2Frust_exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxdotdotg%2Frust_exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 415483b495fda562ccf51029830316b231861bfb
[INFO] testing maxdotdotg/rust_exercises against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxdotdotg%2Frust_exercises" "/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/maxdotdotg/rust_exercises on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/maxdotdotg/rust_exercises
[INFO] finished tweaking git repo https://github.com/maxdotdotg/rust_exercises
[INFO] tweaked toml for git repo https://github.com/maxdotdotg/rust_exercises written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/maxdotdotg/rust_exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "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" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2ee7cf72c3c7090770d6a567b5cfd058e6136bfcba1780d5d5ef718ce114a7b
[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" "f2ee7cf72c3c7090770d6a567b5cfd058e6136bfcba1780d5d5ef718ce114a7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2ee7cf72c3c7090770d6a567b5cfd058e6136bfcba1780d5d5ef718ce114a7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2ee7cf72c3c7090770d6a567b5cfd058e6136bfcba1780d5d5ef718ce114a7b", kill_on_drop: false }`
[INFO] [stdout] f2ee7cf72c3c7090770d6a567b5cfd058e6136bfcba1780d5d5ef718ce114a7b
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6c14f300561853fe86885a3d98ca61436b343ee4c4bc1079e1b638a827a30c1
[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" "c6c14f300561853fe86885a3d98ca61436b343ee4c4bc1079e1b638a827a30c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `IpAddrKind_with_types` should have an upper camel case name
[INFO] [stdout]  --> src/bin/enums.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum IpAddrKind_with_types {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `IpAddrKindWithTypes`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v_four`
[INFO] [stdout]   --> src/bin/enums.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let v_four = IpAddrKind::V4;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_v_four`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v_six`
[INFO] [stdout]   --> src/bin/enums.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let v_six = IpAddrKind::V6;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_v_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/bin/enums.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let home = IpAddr {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loopback`
[INFO] [stdout]   --> src/bin/enums.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let loopback = IpAddr {
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loop_again`
[INFO] [stdout]   --> src/bin/enums.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let loop_again = IpAddrKind_with_types::V6(String::from("::1"));
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loop_again`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_kind`
[INFO] [stdout]   --> src/bin/enums.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn route(ip_kind: IpAddrKind) { }
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `kind`
[INFO] [stdout]   --> src/bin/enums.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     kind: IpAddrKind,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `address`
[INFO] [stdout]   --> src/bin/enums.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     address: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `route`
[INFO] [stdout]   --> src/bin/enums.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn route(ip_kind: IpAddrKind) { }
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user5`
[INFO] [stdout]   --> src/bin/struct.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let user5 = User {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user5`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color_var`
[INFO] [stdout]   --> src/bin/struct.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let color_var = Color(0, 0, 0);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_color_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/functions.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let x = 5;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]   --> src/bin/match.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let mut count = 0;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_count` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/bin/match.rs:60:14
[INFO] [stdout]    |
[INFO] [stdout] 60 |         _ => count += 1,
[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 `count_2` is assigned to, but never used
[INFO] [stdout]   --> src/bin/match.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mut count_2 = 0;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_count_2` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count_2` is never read
[INFO] [stdout]   --> src/bin/match.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         count_2 += 1;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nickel`
[INFO] [stdout]  --> src/bin/match.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Nickel,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Dime`
[INFO] [stdout]  --> src/bin/match.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Dime,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/bin/option.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let six = plus_one(five);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/bin/option.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let none = plus_one(None);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "c6c14f300561853fe86885a3d98ca61436b343ee4c4bc1079e1b638a827a30c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6c14f300561853fe86885a3d98ca61436b343ee4c4bc1079e1b638a827a30c1", kill_on_drop: false }`
[INFO] [stdout] c6c14f300561853fe86885a3d98ca61436b343ee4c4bc1079e1b638a827a30c1
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40b113f5ff7e8cdecaf27270db2d5c749133d407b57e886e47330ea12da7c527
[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" "40b113f5ff7e8cdecaf27270db2d5c749133d407b57e886e47330ea12da7c527", kill_on_drop: false }`
[INFO] [stderr]    Compiling exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `IpAddrKind_with_types` should have an upper camel case name
[INFO] [stdout]  --> src/bin/enums.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum IpAddrKind_with_types {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `IpAddrKindWithTypes`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/bin/functions.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let x = 5;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v_four`
[INFO] [stdout]   --> src/bin/enums.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let v_four = IpAddrKind::V4;
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_v_four`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v_six`
[INFO] [stdout]   --> src/bin/enums.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let v_six = IpAddrKind::V6;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_v_six`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `home`
[INFO] [stdout]   --> src/bin/enums.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let home = IpAddr {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loopback`
[INFO] [stdout]   --> src/bin/enums.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let loopback = IpAddr {
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `loop_again`
[INFO] [stdout]   --> src/bin/enums.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let loop_again = IpAddrKind_with_types::V6(String::from("::1"));
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loop_again`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ip_kind`
[INFO] [stdout]   --> src/bin/enums.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn route(ip_kind: IpAddrKind) { }
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `kind`
[INFO] [stdout]   --> src/bin/enums.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     kind: IpAddrKind,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `address`
[INFO] [stdout]   --> src/bin/enums.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     address: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `route`
[INFO] [stdout]   --> src/bin/enums.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn route(ip_kind: IpAddrKind) { }
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]   --> src/bin/match.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let mut count = 0;
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_count` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/bin/match.rs:60:14
[INFO] [stdout]    |
[INFO] [stdout] 60 |         _ => count += 1,
[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 `count_2` is assigned to, but never used
[INFO] [stdout]   --> src/bin/match.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mut count_2 = 0;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_count_2` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count_2` is never read
[INFO] [stdout]   --> src/bin/match.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         count_2 += 1;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user5`
[INFO] [stdout]   --> src/bin/struct.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let user5 = User {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user5`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color_var`
[INFO] [stdout]   --> src/bin/struct.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let color_var = Color(0, 0, 0);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_color_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nickel`
[INFO] [stdout]  --> src/bin/match.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Nickel,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Dime`
[INFO] [stdout]  --> src/bin/match.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Dime,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/bin/option.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let six = plus_one(five);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/bin/option.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let none = plus_one(None);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "40b113f5ff7e8cdecaf27270db2d5c749133d407b57e886e47330ea12da7c527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40b113f5ff7e8cdecaf27270db2d5c749133d407b57e886e47330ea12da7c527", kill_on_drop: false }`
[INFO] [stdout] 40b113f5ff7e8cdecaf27270db2d5c749133d407b57e886e47330ea12da7c527
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", 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] 858272b1792dcca760f1c88c1e9878518f606c849ecc43c973e4efbac9449d10
[INFO] running `Command { std: "docker" "start" "-a" "858272b1792dcca760f1c88c1e9878518f606c849ecc43c973e4efbac9449d10", kill_on_drop: false }`
[INFO] [stderr] warning: type `IpAddrKind_with_types` should have an upper camel case name
[INFO] [stderr]  --> src/bin/enums.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 | enum IpAddrKind_with_types {
[INFO] [stderr]   |      ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `IpAddrKindWithTypes`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v_four`
[INFO] [stderr]   --> src/bin/enums.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let v_four = IpAddrKind::V4;
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_v_four`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v_six`
[INFO] [stderr]   --> src/bin/enums.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let v_six = IpAddrKind::V6;
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_v_six`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/bin/enums.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let home = IpAddr {
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loopback`
[INFO] [stderr]   --> src/bin/enums.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let loopback = IpAddr {
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `loop_again`
[INFO] [stderr]   --> src/bin/enums.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let loop_again = IpAddrKind_with_types::V6(String::from("::1"));
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loop_again`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ip_kind`
[INFO] [stderr]   --> src/bin/enums.rs:42:10
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn route(ip_kind: IpAddrKind) { }
[INFO] [stderr]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ip_kind`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `kind`
[INFO] [stderr]   --> src/bin/enums.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     kind: IpAddrKind,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `address`
[INFO] [stderr]   --> src/bin/enums.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     address: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `route`
[INFO] [stderr]   --> src/bin/enums.rs:42:4
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn route(ip_kind: IpAddrKind) { }
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/bin/option.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let six = plus_one(five);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `none`
[INFO] [stderr]   --> src/bin/option.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let none = plus_one(None);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stderr]   --> src/bin/match.rs:56:9
[INFO] [stderr]    |
[INFO] [stderr] 56 |     let mut count = 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stderr]   --> src/bin/match.rs:60:14
[INFO] [stderr]    |
[INFO] [stderr] 60 |         _ => count += 1,
[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: variable `count_2` is assigned to, but never used
[INFO] [stderr]   --> src/bin/match.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let mut count_2 = 0;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_count_2` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count_2` is never read
[INFO] [stderr]   --> src/bin/match.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         count_2 += 1;
[INFO] [stderr]    |         ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nickel`
[INFO] [stderr]  --> src/bin/match.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Nickel,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Dime`
[INFO] [stderr]  --> src/bin/match.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Dime,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user5`
[INFO] [stderr]   --> src/bin/struct.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let user5 = User {
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_user5`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color_var`
[INFO] [stderr]   --> src/bin/struct.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |     let color_var = Color(0, 0, 0);
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_color_var`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/bin/functions.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let x = 5;
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/control_flow-99e1672595e6dc6e
[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]      Running /opt/rustwide/target/debug/deps/enums-72732d9a426a113a
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/functions-0a950877b3a5abf4
[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/match-990f8266dacf0578
[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] [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]      Running /opt/rustwide/target/debug/deps/option-85d42ca63978326c
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/references-56e0d305ad81a45e
[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] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/slice-147561b8f8b1a20b
[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/struct-1acab555d6bef90c
[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]      Running /opt/rustwide/target/debug/deps/variables-e6b5cc4856e5d878
[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] [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] running `Command { std: "docker" "inspect" "858272b1792dcca760f1c88c1e9878518f606c849ecc43c973e4efbac9449d10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "858272b1792dcca760f1c88c1e9878518f606c849ecc43c973e4efbac9449d10", kill_on_drop: false }`
[INFO] [stdout] 858272b1792dcca760f1c88c1e9878518f606c849ecc43c973e4efbac9449d10