[INFO] updating cached repository https://github.com/odd-otocyon/learning_rust- [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }` [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] af1ae8fec3de199029fa4fc33b998bc0416ac588 [INFO] testing odd-otocyon/learning_rust- against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fodd-otocyon%2Flearning_rust-" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/odd-otocyon/learning_rust- on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/odd-otocyon/learning_rust- [INFO] finished tweaking git repo https://github.com/odd-otocyon/learning_rust- [INFO] tweaked toml for git repo https://github.com/odd-otocyon/learning_rust- written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/odd-otocyon/learning_rust- already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", 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] 03c5592b7b2284fcbd100a7e5c17ecc296519a939a603e4b867d0f92b025e9af [INFO] running `Command { std: "docker" "start" "-a" "03c5592b7b2284fcbd100a7e5c17ecc296519a939a603e4b867d0f92b025e9af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "03c5592b7b2284fcbd100a7e5c17ecc296519a939a603e4b867d0f92b025e9af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "03c5592b7b2284fcbd100a7e5c17ecc296519a939a603e4b867d0f92b025e9af", kill_on_drop: false }` [INFO] [stdout] 03c5592b7b2284fcbd100a7e5c17ecc296519a939a603e4b867d0f92b025e9af [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", 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] 068d5a5ea1201a36cd19317d5e4cd5a3c1738c10dff1090a6e461ab0856b1bc7 [INFO] running `Command { std: "docker" "start" "-a" "068d5a5ea1201a36cd19317d5e4cd5a3c1738c10dff1090a6e461ab0856b1bc7", kill_on_drop: false }` [INFO] [stderr] Compiling learning_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `error_handling` [INFO] [stdout] --> src/main.rs:10:3 [INFO] [stdout] | [INFO] [stdout] 10 | error_handling, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `empty_vector` [INFO] [stdout] --> src/chapters/vectors.rs:11:7 [INFO] [stdout] | [INFO] [stdout] 11 | let empty_vector: Vec = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_empty_vector` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `blue` [INFO] [stdout] --> src/chapters/maps.rs:10:7 [INFO] [stdout] | [INFO] [stdout] 10 | let blue = scores.get("Blue"); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_blue` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/chapters/error_handling.rs:11:7 [INFO] [stdout] | [INFO] [stdout] 11 | 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: `other_error` [INFO] [stdout] --> src/chapters/error_handling.rs:18:7 [INFO] [stdout] | [INFO] [stdout] 18 | other_error => panic!("Problem opening the file {:?}", error), [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_other_error` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/chapters/error_handling.rs:48:7 [INFO] [stdout] | [INFO] [stdout] 48 | let mut f = File::open("hello.txt")?.read_to_string(&mut s)?; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/chapters/error_handling.rs:48:7 [INFO] [stdout] | [INFO] [stdout] 48 | let mut f = File::open("hello.txt")?.read_to_string(&mut s)?; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Move` [INFO] [stdout] --> src/chapters/enums.rs:10:3 [INFO] [stdout] | [INFO] [stdout] 10 | Move { x: i32, y: i32 }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `ChangeColor` [INFO] [stdout] --> src/chapters/enums.rs:12:3 [INFO] [stdout] | [INFO] [stdout] 12 | ChangeColor(i32, i32, i32), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Alabama` [INFO] [stdout] --> src/chapters/pattern_matching.rs:4:3 [INFO] [stdout] | [INFO] [stdout] 4 | Alabama, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Arkansas` [INFO] [stdout] --> src/chapters/pattern_matching.rs:5:3 [INFO] [stdout] | [INFO] [stdout] 5 | Arkansas, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Alaska` [INFO] [stdout] --> src/chapters/pattern_matching.rs:6:3 [INFO] [stdout] | [INFO] [stdout] 6 | Alaska, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Peny` [INFO] [stdout] --> src/chapters/pattern_matching.rs:11:3 [INFO] [stdout] | [INFO] [stdout] 11 | Peny, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Nickel` [INFO] [stdout] --> src/chapters/pattern_matching.rs:12:3 [INFO] [stdout] | [INFO] [stdout] 12 | Nickel, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Dime` [INFO] [stdout] --> src/chapters/pattern_matching.rs:13:3 [INFO] [stdout] | [INFO] [stdout] 13 | Dime, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `results` [INFO] [stdout] --> src/chapters/error_handling.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub fn results() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `read_username_from_file` [INFO] [stdout] --> src/chapters/error_handling.rs:28:4 [INFO] [stdout] | [INFO] [stdout] 28 | fn read_username_from_file() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `read_username_from_file_short` [INFO] [stdout] --> src/chapters/error_handling.rs:45:4 [INFO] [stdout] | [INFO] [stdout] 45 | fn read_username_from_file_short() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `get_x` [INFO] [stdout] --> src/chapters/generic_types.rs:8:6 [INFO] [stdout] | [INFO] [stdout] 8 | fn get_x(&self) -> &T { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 19 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.40s [INFO] running `Command { std: "docker" "inspect" "068d5a5ea1201a36cd19317d5e4cd5a3c1738c10dff1090a6e461ab0856b1bc7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "068d5a5ea1201a36cd19317d5e4cd5a3c1738c10dff1090a6e461ab0856b1bc7", kill_on_drop: false }` [INFO] [stdout] 068d5a5ea1201a36cd19317d5e4cd5a3c1738c10dff1090a6e461ab0856b1bc7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c86afd1c13916cdbf74598cf19fe503b359e193586b80931796387ec80559a7b [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" "c86afd1c13916cdbf74598cf19fe503b359e193586b80931796387ec80559a7b", kill_on_drop: false }` [INFO] [stderr] Compiling learning_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `error_handling` [INFO] [stdout] --> src/main.rs:10:3 [INFO] [stdout] | [INFO] [stdout] 10 | error_handling, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `empty_vector` [INFO] [stdout] --> src/chapters/vectors.rs:11:7 [INFO] [stdout] | [INFO] [stdout] 11 | let empty_vector: Vec = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_empty_vector` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `blue` [INFO] [stdout] --> src/chapters/maps.rs:10:7 [INFO] [stdout] | [INFO] [stdout] 10 | let blue = scores.get("Blue"); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_blue` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/chapters/error_handling.rs:11:7 [INFO] [stdout] | [INFO] [stdout] 11 | 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: `other_error` [INFO] [stdout] --> src/chapters/error_handling.rs:18:7 [INFO] [stdout] | [INFO] [stdout] 18 | other_error => panic!("Problem opening the file {:?}", error), [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_other_error` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/chapters/error_handling.rs:48:7 [INFO] [stdout] | [INFO] [stdout] 48 | let mut f = File::open("hello.txt")?.read_to_string(&mut s)?; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/chapters/error_handling.rs:48:7 [INFO] [stdout] | [INFO] [stdout] 48 | let mut f = File::open("hello.txt")?.read_to_string(&mut s)?; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Move` [INFO] [stdout] --> src/chapters/enums.rs:10:3 [INFO] [stdout] | [INFO] [stdout] 10 | Move { x: i32, y: i32 }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `ChangeColor` [INFO] [stdout] --> src/chapters/enums.rs:12:3 [INFO] [stdout] | [INFO] [stdout] 12 | ChangeColor(i32, i32, i32), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Alabama` [INFO] [stdout] --> src/chapters/pattern_matching.rs:4:3 [INFO] [stdout] | [INFO] [stdout] 4 | Alabama, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Arkansas` [INFO] [stdout] --> src/chapters/pattern_matching.rs:5:3 [INFO] [stdout] | [INFO] [stdout] 5 | Arkansas, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Alaska` [INFO] [stdout] --> src/chapters/pattern_matching.rs:6:3 [INFO] [stdout] | [INFO] [stdout] 6 | Alaska, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Peny` [INFO] [stdout] --> src/chapters/pattern_matching.rs:11:3 [INFO] [stdout] | [INFO] [stdout] 11 | Peny, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Nickel` [INFO] [stdout] --> src/chapters/pattern_matching.rs:12:3 [INFO] [stdout] | [INFO] [stdout] 12 | Nickel, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Dime` [INFO] [stdout] --> src/chapters/pattern_matching.rs:13:3 [INFO] [stdout] | [INFO] [stdout] 13 | Dime, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `results` [INFO] [stdout] --> src/chapters/error_handling.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub fn results() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `read_username_from_file` [INFO] [stdout] --> src/chapters/error_handling.rs:28:4 [INFO] [stdout] | [INFO] [stdout] 28 | fn read_username_from_file() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `read_username_from_file_short` [INFO] [stdout] --> src/chapters/error_handling.rs:45:4 [INFO] [stdout] | [INFO] [stdout] 45 | fn read_username_from_file_short() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `get_x` [INFO] [stdout] --> src/chapters/generic_types.rs:8:6 [INFO] [stdout] | [INFO] [stdout] 8 | fn get_x(&self) -> &T { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 19 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.72s [INFO] running `Command { std: "docker" "inspect" "c86afd1c13916cdbf74598cf19fe503b359e193586b80931796387ec80559a7b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c86afd1c13916cdbf74598cf19fe503b359e193586b80931796387ec80559a7b", kill_on_drop: false }` [INFO] [stdout] c86afd1c13916cdbf74598cf19fe503b359e193586b80931796387ec80559a7b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 4a89aca9a3ac0b014fab04dca9bbafbdc97e2f1a610f7e91bc231965e67bb7a2 [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" "4a89aca9a3ac0b014fab04dca9bbafbdc97e2f1a610f7e91bc231965e67bb7a2", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `error_handling` [INFO] [stderr] --> src/main.rs:10:3 [INFO] [stderr] | [INFO] [stderr] 10 | error_handling, [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `empty_vector` [INFO] [stderr] --> src/chapters/vectors.rs:11:7 [INFO] [stderr] | [INFO] [stderr] 11 | let empty_vector: Vec = Vec::new(); [INFO] [stderr] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_empty_vector` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `blue` [INFO] [stderr] --> src/chapters/maps.rs:10:7 [INFO] [stderr] | [INFO] [stderr] 10 | let blue = scores.get("Blue"); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_blue` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/chapters/error_handling.rs:11:7 [INFO] [stderr] | [INFO] [stderr] 11 | let f = match f { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `other_error` [INFO] [stderr] --> src/chapters/error_handling.rs:18:7 [INFO] [stderr] | [INFO] [stderr] 18 | other_error => panic!("Problem opening the file {:?}", error), [INFO] [stderr] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_other_error` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `f` [INFO] [stderr] --> src/chapters/error_handling.rs:48:7 [INFO] [stderr] | [INFO] [stderr] 48 | let mut f = File::open("hello.txt")?.read_to_string(&mut s)?; [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/chapters/error_handling.rs:48:7 [INFO] [stderr] | [INFO] [stderr] 48 | let mut f = File::open("hello.txt")?.read_to_string(&mut s)?; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Move` [INFO] [stderr] --> src/chapters/enums.rs:10:3 [INFO] [stderr] | [INFO] [stderr] 10 | Move { x: i32, y: i32 }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `ChangeColor` [INFO] [stderr] --> src/chapters/enums.rs:12:3 [INFO] [stderr] | [INFO] [stderr] 12 | ChangeColor(i32, i32, i32), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Alabama` [INFO] [stderr] --> src/chapters/pattern_matching.rs:4:3 [INFO] [stderr] | [INFO] [stderr] 4 | Alabama, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Arkansas` [INFO] [stderr] --> src/chapters/pattern_matching.rs:5:3 [INFO] [stderr] | [INFO] [stderr] 5 | Arkansas, [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Alaska` [INFO] [stderr] --> src/chapters/pattern_matching.rs:6:3 [INFO] [stderr] | [INFO] [stderr] 6 | Alaska, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Peny` [INFO] [stderr] --> src/chapters/pattern_matching.rs:11:3 [INFO] [stderr] | [INFO] [stderr] 11 | Peny, [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Nickel` [INFO] [stderr] --> src/chapters/pattern_matching.rs:12:3 [INFO] [stderr] | [INFO] [stderr] 12 | Nickel, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Dime` [INFO] [stderr] --> src/chapters/pattern_matching.rs:13:3 [INFO] [stderr] | [INFO] [stderr] 13 | Dime, [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `results` [INFO] [stderr] --> src/chapters/error_handling.rs:5:8 [INFO] [stderr] | [INFO] [stderr] 5 | pub fn results() { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `read_username_from_file` [INFO] [stderr] --> src/chapters/error_handling.rs:28:4 [INFO] [stderr] | [INFO] [stderr] 28 | fn read_username_from_file() -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `read_username_from_file_short` [INFO] [stderr] --> src/chapters/error_handling.rs:45:4 [INFO] [stderr] | [INFO] [stderr] 45 | fn read_username_from_file_short() -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `get_x` [INFO] [stderr] --> src/chapters/generic_types.rs:8:6 [INFO] [stderr] | [INFO] [stderr] 8 | fn get_x(&self) -> &T { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 19 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/learning_rust-9d281a937c185f7b [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" "4a89aca9a3ac0b014fab04dca9bbafbdc97e2f1a610f7e91bc231965e67bb7a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4a89aca9a3ac0b014fab04dca9bbafbdc97e2f1a610f7e91bc231965e67bb7a2", kill_on_drop: false }` [INFO] [stdout] 4a89aca9a3ac0b014fab04dca9bbafbdc97e2f1a610f7e91bc231965e67bb7a2