[INFO] cloning repository https://github.com/harismuzaffer/rustsnippets [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/harismuzaffer/rustsnippets" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fharismuzaffer%2Frustsnippets", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fharismuzaffer%2Frustsnippets'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8cbc904cc38296fe2cbfe76fca8527fa1c2db29b [INFO] checking harismuzaffer/rustsnippets against master#430feb24a46993e5073c1bb1b39da190d83fa2bf for pr-78363 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fharismuzaffer%2Frustsnippets" "/workspace/builds/worker-12/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/harismuzaffer/rustsnippets on toolchain 430feb24a46993e5073c1bb1b39da190d83fa2bf [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/harismuzaffer/rustsnippets [INFO] finished tweaking git repo https://github.com/harismuzaffer/rustsnippets [INFO] tweaked toml for git repo https://github.com/harismuzaffer/rustsnippets written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/harismuzaffer/rustsnippets already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d135c9362d0187b7f9876113d9f41ecf1584282ae76091c730e6c8ec2bf81c96 [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" "d135c9362d0187b7f9876113d9f41ecf1584282ae76091c730e6c8ec2bf81c96", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d135c9362d0187b7f9876113d9f41ecf1584282ae76091c730e6c8ec2bf81c96", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d135c9362d0187b7f9876113d9f41ecf1584282ae76091c730e6c8ec2bf81c96", kill_on_drop: false }` [INFO] [stdout] d135c9362d0187b7f9876113d9f41ecf1584282ae76091c730e6c8ec2bf81c96 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2f1e5326f432373a209d660d172e509426c9ec8bc26659c220674bf37cbde1e7 [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" "2f1e5326f432373a209d660d172e509426c9ec8bc26659c220674bf37cbde1e7", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.77 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand v0.5.6 [INFO] [stderr] Checking learningrust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/strings.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let b = a; // this doesnt move ownership from a to b becoz a is a string literal [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `another_slice_string` [INFO] [stdout] --> src/strings.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let another_slice_string = &normal_string[0..5]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another_slice_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/datatypes.rs:21:17 [INFO] [stdout] | [INFO] [stdout] 21 | let (x, y, z, o) = tup; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `z` [INFO] [stdout] --> src/datatypes.rs:21:20 [INFO] [stdout] | [INFO] [stdout] 21 | let (x, y, z, o) = tup; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `o` [INFO] [stdout] --> src/datatypes.rs:21:23 [INFO] [stdout] | [INFO] [stdout] 21 | let (x, y, z, o) = tup; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_o` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `x` is never read [INFO] [stdout] --> src/enums.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | x = get_location(myipadd); [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: unused variable: `v` [INFO] [stdout] --> src/vectors.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mut v: Vec = Vec::new(); // an empty vector [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> src/vectors.rs:41:13 [INFO] [stdout] | [INFO] [stdout] 41 | let row = vec![ [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/safety_rules.rs:22:14 [INFO] [stdout] | [INFO] [stdout] 22 | fn ownit(s: String){ [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ss` [INFO] [stdout] --> src/safety_rules.rs:32:13 [INFO] [stdout] | [INFO] [stdout] 32 | let ss = &s; // ok [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_ss` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sss` [INFO] [stdout] --> src/safety_rules.rs:33:13 [INFO] [stdout] | [INFO] [stdout] 33 | let sss = &s; // ok [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sss` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `kk` [INFO] [stdout] --> src/safety_rules.rs:36:13 [INFO] [stdout] | [INFO] [stdout] 36 | let kk = &k; // ok [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_kk` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `kk` [INFO] [stdout] --> src/safety_rules.rs:37:13 [INFO] [stdout] | [INFO] [stdout] 37 | let kk = &mut k; // not ok because mutable and immutable coexisting [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_kk` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ll` [INFO] [stdout] --> src/safety_rules.rs:40:13 [INFO] [stdout] | [INFO] [stdout] 40 | let ll = &mut l; // ok [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_ll` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `lll` [INFO] [stdout] --> src/safety_rules.rs:41:13 [INFO] [stdout] | [INFO] [stdout] 41 | let lll = &mut l; // not ok because tow immutable references [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_lll` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m` [INFO] [stdout] --> src/safety_rules.rs:44:13 [INFO] [stdout] | [INFO] [stdout] 44 | let mut m = String::from("hello world"); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_m` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mmm` [INFO] [stdout] --> src/safety_rules.rs:47:13 [INFO] [stdout] | [INFO] [stdout] 47 | let mmm = &mut s; // ok because the non-lexical lifetime of mm is over so we can have new set of references to m [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_mmm` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item_100th` [INFO] [stdout] --> src/error_handling.rs:6:13 [INFO] [stdout] | [INFO] [stdout] 6 | let item_100th = &v[99]; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_item_100th` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/error_handling.rs:25:13 [INFO] [stdout] | [INFO] [stdout] 25 | 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: `abc` [INFO] [stdout] --> src/error_handling.rs:35:17 [INFO] [stdout] | [INFO] [stdout] 35 | abc => panic!("problem opening the file") [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_abc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/error_handling.rs:42:13 [INFO] [stdout] | [INFO] [stdout] 42 | 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: `ff` [INFO] [stdout] --> src/error_handling.rs:49:13 [INFO] [stdout] | [INFO] [stdout] 49 | let ff = File::open("somefile.csv").expect("file could not be opened"); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_ff` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `fff` [INFO] [stdout] --> src/error_handling.rs:50:13 [INFO] [stdout] | [INFO] [stdout] 50 | let fff = File::open("somefile.csv").unwrap(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_fff` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/strings.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let b = a; // this doesnt move ownership from a to b becoz a is a string literal [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `another_slice_string` [INFO] [stdout] --> src/strings.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let another_slice_string = &normal_string[0..5]; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_another_slice_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/datatypes.rs:21:17 [INFO] [stdout] | [INFO] [stdout] 21 | let (x, y, z, o) = tup; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `z` [INFO] [stdout] --> src/datatypes.rs:21:20 [INFO] [stdout] | [INFO] [stdout] 21 | let (x, y, z, o) = tup; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `o` [INFO] [stdout] --> src/datatypes.rs:21:23 [INFO] [stdout] | [INFO] [stdout] 21 | let (x, y, z, o) = tup; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_o` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `x` is never read [INFO] [stdout] --> src/enums.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | x = get_location(myipadd); [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: unused variable: `v` [INFO] [stdout] --> src/vectors.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mut v: Vec = Vec::new(); // an empty vector [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> src/vectors.rs:41:13 [INFO] [stdout] | [INFO] [stdout] 41 | let row = vec![ [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/safety_rules.rs:22:14 [INFO] [stdout] | [INFO] [stdout] 22 | fn ownit(s: String){ [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ss` [INFO] [stdout] --> src/safety_rules.rs:32:13 [INFO] [stdout] | [INFO] [stdout] 32 | let ss = &s; // ok [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_ss` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sss` [INFO] [stdout] --> src/safety_rules.rs:33:13 [INFO] [stdout] | [INFO] [stdout] 33 | let sss = &s; // ok [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sss` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `kk` [INFO] [stdout] --> src/safety_rules.rs:36:13 [INFO] [stdout] | [INFO] [stdout] 36 | let kk = &k; // ok [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_kk` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `kk` [INFO] [stdout] --> src/safety_rules.rs:37:13 [INFO] [stdout] | [INFO] [stdout] 37 | let kk = &mut k; // not ok because mutable and immutable coexisting [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_kk` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `ll` [INFO] [stdout] --> src/safety_rules.rs:40:13 [INFO] [stdout] | [INFO] [stdout] 40 | let ll = &mut l; // ok [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_ll` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `lll` [INFO] [stdout] --> src/safety_rules.rs:41:13 [INFO] [stdout] | [INFO] [stdout] 41 | let lll = &mut l; // not ok because tow immutable references [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_lll` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m` [INFO] [stdout] --> src/safety_rules.rs:44:13 [INFO] [stdout] | [INFO] [stdout] 44 | let mut m = String::from("hello world"); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_m` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mmm` [INFO] [stdout] --> src/safety_rules.rs:47:13 [INFO] [stdout] | [INFO] [stdout] 47 | let mmm = &mut s; // ok because the non-lexical lifetime of mm is over so we can have new set of references to m [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_mmm` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item_100th` [INFO] [stdout] --> src/error_handling.rs:6:13 [INFO] [stdout] | [INFO] [stdout] 6 | let item_100th = &v[99]; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_item_100th` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/error_handling.rs:25:13 [INFO] [stdout] | [INFO] [stdout] 25 | 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: `abc` [INFO] [stdout] --> src/error_handling.rs:35:17 [INFO] [stdout] | [INFO] [stdout] 35 | abc => panic!("problem opening the file") [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_abc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/error_handling.rs:42:13 [INFO] [stdout] | [INFO] [stdout] 42 | 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: `ff` [INFO] [stdout] --> src/error_handling.rs:49:13 [INFO] [stdout] | [INFO] [stdout] 49 | let ff = File::open("somefile.csv").expect("file could not be opened"); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_ff` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `fff` [INFO] [stdout] --> src/error_handling.rs:50:13 [INFO] [stdout] | [INFO] [stdout] 50 | let fff = File::open("somefile.csv").unwrap(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_fff` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/vectors.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mut v: Vec = Vec::new(); // an empty vector [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: variable does not need to be mutable [INFO] [stdout] --> src/vectors.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mut v: Vec = Vec::new(); // an empty vector [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: variable does not need to be mutable [INFO] [stdout] --> src/safety_rules.rs:44:13 [INFO] [stdout] | [INFO] [stdout] 44 | let mut m = String::from("hello world"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/safety_rules.rs:44:13 [INFO] [stdout] | [INFO] [stdout] 44 | let mut m = String::from("hello world"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 25 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.73s [INFO] [stdout] warning: 25 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "2f1e5326f432373a209d660d172e509426c9ec8bc26659c220674bf37cbde1e7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2f1e5326f432373a209d660d172e509426c9ec8bc26659c220674bf37cbde1e7", kill_on_drop: false }` [INFO] [stdout] 2f1e5326f432373a209d660d172e509426c9ec8bc26659c220674bf37cbde1e7