[INFO] cloning repository https://github.com/warcholprzemo/rust_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warcholprzemo/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial/objects/info: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 1) [INFO] cloning repository https://github.com/warcholprzemo/rust_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warcholprzemo/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial/objects/pack: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 2) [INFO] cloning repository https://github.com/warcholprzemo/rust_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warcholprzemo/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial'... [INFO] [stderr] error: copy-fd: write returned: No space left on device [INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/applypatch-msg.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial/hooks/applypatch-msg.sample': No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 3) [INFO] cloning repository https://github.com/warcholprzemo/rust_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warcholprzemo/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 4) [INFO] cloning repository https://github.com/warcholprzemo/rust_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warcholprzemo/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 5) [INFO] cloning repository https://github.com/warcholprzemo/rust_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warcholprzemo/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 6) [INFO] cloning repository https://github.com/warcholprzemo/rust_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warcholprzemo/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 7) [INFO] cloning repository https://github.com/warcholprzemo/rust_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warcholprzemo/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 8) [INFO] cloning repository https://github.com/warcholprzemo/rust_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warcholprzemo/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 9) [INFO] cloning repository https://github.com/warcholprzemo/rust_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warcholprzemo/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 10) [INFO] cloning repository https://github.com/warcholprzemo/rust_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warcholprzemo/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 11) [INFO] cloning repository https://github.com/warcholprzemo/rust_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warcholprzemo/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial'... [INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial: No space left on device [WARN] Retrying crate fetch in 3 seconds (attempt 12) [INFO] cloning repository https://github.com/warcholprzemo/rust_tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/warcholprzemo/rust_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e082965c7c079815e735daab2f37c4d40ac49207 [INFO] checking warcholprzemo/rust_tutorial against master#1f81f906893d166d05fb4839f169983f2b564cc7 for pr-135167 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwarcholprzemo%2Frust_tutorial" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/warcholprzemo/rust_tutorial on toolchain 1f81f906893d166d05fb4839f169983f2b564cc7 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f81f906893d166d05fb4839f169983f2b564cc7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/warcholprzemo/rust_tutorial [INFO] finished tweaking git repo https://github.com/warcholprzemo/rust_tutorial [INFO] tweaked toml for git repo https://github.com/warcholprzemo/rust_tutorial written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/warcholprzemo/rust_tutorial 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" "+1f81f906893d166d05fb4839f169983f2b564cc7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1f81f906893d166d05fb4839f169983f2b564cc7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d66df36963ddf02c7265e59dab101620de43577d0fad54969bf47c61b9f6cdb4 [INFO] running `Command { std: "docker" "start" "-a" "d66df36963ddf02c7265e59dab101620de43577d0fad54969bf47c61b9f6cdb4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d66df36963ddf02c7265e59dab101620de43577d0fad54969bf47c61b9f6cdb4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d66df36963ddf02c7265e59dab101620de43577d0fad54969bf47c61b9f6cdb4", kill_on_drop: false }` [INFO] [stdout] d66df36963ddf02c7265e59dab101620de43577d0fad54969bf47c61b9f6cdb4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1f81f906893d166d05fb4839f169983f2b564cc7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 18ccbb431a334327edaca803e369f43316bfea4e3d42de8b9ba265aaa9a39d0a [INFO] running `Command { std: "docker" "start" "-a" "18ccbb431a334327edaca803e369f43316bfea4e3d42de8b9ba265aaa9a39d0a", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.86 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand v0.5.6 [INFO] [stderr] Checking rust_tutorial v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/enums.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let home = IpAddr::V4(String::from("127.0.0.1")); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/enums.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let home = IpAddr::V4(String::from("127.0.0.1")); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/enums.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 36 | let loopback = IpAddr::V6(String::from("::1")); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/enums.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 36 | let loopback = IpAddr::V6(String::from("::1")); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `six` [INFO] [stdout] --> src/enums.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | let six = plus_one(five); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_six` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `six` [INFO] [stdout] --> src/enums.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | let six = plus_one(five); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_six` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `none` [INFO] [stdout] --> src/enums.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | 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: unused variable: `none` [INFO] [stdout] --> src/enums.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | 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: unused variable: `f` [INFO] [stdout] --> src/recoverable_errors.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let f = match f { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/recoverable_errors.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let f = match f { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/recoverable_errors.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let f = match f { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/recoverable_errors.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let f = match f { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f1` [INFO] [stdout] --> src/recoverable_errors.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let f1 = File::open("progress.txt").unwrap(); // default message [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_f1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f1` [INFO] [stdout] --> src/recoverable_errors.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let f1 = File::open("progress.txt").unwrap(); // default message [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_f1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f2` [INFO] [stdout] --> src/recoverable_errors.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let f2 = File::open("progress.txt").expect("Failed to open file progress.txt"); // custom message [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_f2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f2` [INFO] [stdout] --> src/recoverable_errors.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let f2 = File::open("progress.txt").expect("Failed to open file progress.txt"); // custom message [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_f2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `2` is never read [INFO] [stdout] --> src/main.rs:122:24 [INFO] [stdout] | [INFO] [stdout] 122 | struct Color(u32, u32, u32); [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `2` is never read [INFO] [stdout] --> src/main.rs:122:24 [INFO] [stdout] | [INFO] [stdout] 122 | struct Color(u32, u32, u32); [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enums.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | V4(String), //we can do this also as V4(u8, u8, u8, u8) [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 2 | V4(()), //we can do this also as V4(u8, u8, u8, u8) [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enums.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | V4(String), //we can do this also as V4(u8, u8, u8, u8) [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 2 | V4(()), //we can do this also as V4(u8, u8, u8, u8) [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enums.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | V6(String) [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 3 | V6(()) [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enums.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | V6(String) [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 3 | V6(()) [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Nickel` and `Dime` are never constructed [INFO] [stdout] --> src/enums.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 6 | enum Coin { [INFO] [stdout] | ---- variants in this enum [INFO] [stdout] 7 | Penny, [INFO] [stdout] 8 | Nickel, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 9 | Dime, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Nickel` and `Dime` are never constructed [INFO] [stdout] --> src/enums.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 6 | enum Coin { [INFO] [stdout] | ---- variants in this enum [INFO] [stdout] 7 | Penny, [INFO] [stdout] 8 | Nickel, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 9 | Dime, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `largest_i32` is never used [INFO] [stdout] --> src/generics.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn largest_i32(list: &[i32]) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `largest_i32` is never used [INFO] [stdout] --> src/generics.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn largest_i32(list: &[i32]) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `largest_char` is never used [INFO] [stdout] --> src/generics.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn largest_char(list: &[char]) -> char { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `largest_char` is never used [INFO] [stdout] --> src/generics.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn largest_char(list: &[char]) -> char { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.10s [INFO] running `Command { std: "docker" "inspect" "18ccbb431a334327edaca803e369f43316bfea4e3d42de8b9ba265aaa9a39d0a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "18ccbb431a334327edaca803e369f43316bfea4e3d42de8b9ba265aaa9a39d0a", kill_on_drop: false }` [INFO] [stdout] 18ccbb431a334327edaca803e369f43316bfea4e3d42de8b9ba265aaa9a39d0a