[INFO] cloning repository https://github.com/kamikaze/rust-training [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kamikaze/rust-training" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamikaze%2Frust-training", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamikaze%2Frust-training'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a2b458d4d932fac86680a8383ac31614ed3618df [INFO] checking kamikaze/rust-training/a2b458d4d932fac86680a8383ac31614ed3618df against try#bf5ff6675cf10ce009ac02007b064a7cfc4509ac for pr-140558 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamikaze%2Frust-training" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kamikaze/rust-training on toolchain bf5ff6675cf10ce009ac02007b064a7cfc4509ac [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kamikaze/rust-training [INFO] finished tweaking git repo https://github.com/kamikaze/rust-training [INFO] tweaked toml for git repo https://github.com/kamikaze/rust-training written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/kamikaze/rust-training 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" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded aws-types v1.3.4 [INFO] [stderr] Downloaded aws-smithy-types v1.2.12 [INFO] [stderr] Downloaded aws-smithy-eventstream v0.60.6 [INFO] [stderr] Downloaded aws-smithy-async v1.2.4 [INFO] [stderr] Downloaded aws-smithy-checksums v0.62.0 [INFO] [stderr] Downloaded aws-smithy-json v0.61.2 [INFO] [stderr] Downloaded aws-smithy-http v0.60.12 [INFO] [stderr] Downloaded uuid v1.12.0 [INFO] [stderr] Downloaded aws-smithy-runtime v1.7.7 [INFO] [stderr] Downloaded aws-runtime v1.5.4 [INFO] [stderr] Downloaded aws-sigv4 v1.2.7 [INFO] [stderr] Downloaded crc64fast-nvme v1.1.1 [INFO] [stderr] Downloaded aws-sdk-s3 v1.69.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 572a23aa7cce2976afb44523686476cf66e3b03b6596b6a01dac4f1ef55652dd [INFO] running `Command { std: "docker" "start" "-a" "572a23aa7cce2976afb44523686476cf66e3b03b6596b6a01dac4f1ef55652dd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "572a23aa7cce2976afb44523686476cf66e3b03b6596b6a01dac4f1ef55652dd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "572a23aa7cce2976afb44523686476cf66e3b03b6596b6a01dac4f1ef55652dd", kill_on_drop: false }` [INFO] [stdout] 572a23aa7cce2976afb44523686476cf66e3b03b6596b6a01dac4f1ef55652dd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6b60bf629bf66d077b615266f54c986a821a1427ad31d3809c1205fa2f6110a3 [INFO] running `Command { std: "docker" "start" "-a" "6b60bf629bf66d077b615266f54c986a821a1427ad31d3809c1205fa2f6110a3", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.89 [INFO] [stderr] Compiling unicode-ident v1.0.13 [INFO] [stderr] Compiling libc v0.2.169 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling autocfg v1.4.0 [INFO] [stderr] Checking pin-project-lite v0.2.16 [INFO] [stderr] Checking bytes v1.9.0 [INFO] [stderr] Checking smallvec v1.13.2 [INFO] [stderr] Compiling parking_lot_core v0.9.10 [INFO] [stderr] Checking futures-core v0.3.31 [INFO] [stderr] Checking scopeguard v1.2.0 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Compiling serde_spanned v0.6.8 [INFO] [stderr] Compiling toml_edit v0.22.22 [INFO] [stderr] Checking idna_adapter v1.2.0 [INFO] [stderr] Checking aws-smithy-http v0.60.12 [INFO] [stderr] Checking aws-credential-types v1.2.1 [INFO] [stderr] Checking idna v1.0.3 [INFO] [stderr] Checking aws-sigv4 v1.2.7 [INFO] [stderr] Checking url v2.5.4 [INFO] [stderr] Checking hyper v0.14.32 [INFO] [stderr] Compiling toml v0.8.19 [INFO] [stderr] Checking hyper-rustls v0.24.2 [INFO] [stderr] Checking aws-smithy-runtime v1.7.7 [INFO] [stderr] Checking aws-runtime v1.5.4 [INFO] [stderr] Compiling crc64fast-nvme v1.1.1 [INFO] [stderr] Checking aws-smithy-checksums v0.62.0 [INFO] [stderr] Checking aws-sdk-s3 v1.69.0 [INFO] [stderr] Checking rust-training v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0277]: the trait bound `Vec: Seek` is not satisfied [INFO] [stdout] --> src/async_channel.rs:136:14 [INFO] [stdout] | [INFO] [stdout] 136 | .append_writer() [INFO] [stdout] | ^^^^^^^^^^^^^ the trait `Seek` is not implemented for `Vec` [INFO] [stdout] | [INFO] [stdout] = note: required for `&mut Vec` to implement `Seek` [INFO] [stdout] note: required by a bound in `tar::Builder::::append_writer` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tar-0.4.43/src/builder.rs:222:12 [INFO] [stdout] | [INFO] [stdout] 216 | pub fn append_writer<'a, P: AsRef>( [INFO] [stdout] | ------------- required by a bound in this associated function [INFO] [stdout] ... [INFO] [stdout] 222 | W: Seek, [INFO] [stdout] | ^^^^ required by this bound in `Builder::::append_writer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `Vec: Seek` is not satisfied [INFO] [stdout] --> src/async_channel.rs:136:14 [INFO] [stdout] | [INFO] [stdout] 136 | .append_writer() [INFO] [stdout] | ^^^^^^^^^^^^^ the trait `Seek` is not implemented for `Vec` [INFO] [stdout] | [INFO] [stdout] = note: required for `&mut Vec` to implement `Seek` [INFO] [stdout] note: required by a bound in `tar::Builder::::append_writer` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tar-0.4.43/src/builder.rs:222:12 [INFO] [stdout] | [INFO] [stdout] 216 | pub fn append_writer<'a, P: AsRef>( [INFO] [stdout] | ------------- required by a bound in this associated function [INFO] [stdout] ... [INFO] [stdout] 222 | W: Seek, [INFO] [stdout] | ^^^^ required by this bound in `Builder::::append_writer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0061]: this method takes 2 arguments but 0 arguments were supplied [INFO] [stdout] --> src/async_channel.rs:136:14 [INFO] [stdout] | [INFO] [stdout] 136 | .append_writer() [INFO] [stdout] | ^^^^^^^^^^^^^-- two arguments are missing [INFO] [stdout] | [INFO] [stdout] note: method defined here [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tar-0.4.43/src/builder.rs:216:12 [INFO] [stdout] | [INFO] [stdout] 216 | pub fn append_writer<'a, P: AsRef>( [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] help: provide the arguments [INFO] [stdout] | [INFO] [stdout] 136 | .append_writer(/* &mut tar::Header */, /* path */) [INFO] [stdout] | ++++++++++++++++++++++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0061]: this method takes 2 arguments but 0 arguments were supplied [INFO] [stdout] --> src/async_channel.rs:136:14 [INFO] [stdout] | [INFO] [stdout] 136 | .append_writer() [INFO] [stdout] | ^^^^^^^^^^^^^-- two arguments are missing [INFO] [stdout] | [INFO] [stdout] note: method defined here [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tar-0.4.43/src/builder.rs:216:12 [INFO] [stdout] | [INFO] [stdout] 216 | pub fn append_writer<'a, P: AsRef>( [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] help: provide the arguments [INFO] [stdout] | [INFO] [stdout] 136 | .append_writer(/* &mut tar::Header */, /* path */) [INFO] [stdout] | ++++++++++++++++++++++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `async_channel::Receiver: AsyncBufRead` is not satisfied [INFO] [stdout] --> src/async_channel.rs:159:46 [INFO] [stdout] | [INFO] [stdout] 159 | let bz_encoder = BzEncoder::with_quality(compress_rx, Level::Best); [INFO] [stdout] | ----------------------- ^^^^^^^^^^^ the trait `AsyncBufRead` is not implemented for `async_channel::Receiver` [INFO] [stdout] | | [INFO] [stdout] | required by a bound introduced by this call [INFO] [stdout] | [INFO] [stdout] = help: the following other types implement trait `AsyncBufRead`: [INFO] [stdout] &[u8] [INFO] [stdout] &mut T [INFO] [stdout] Box [INFO] [stdout] BufStream [INFO] [stdout] Pin

[INFO] [stdout] async_compression::tokio::write::BzDecoder [INFO] [stdout] async_compression::tokio::write::BzEncoder [INFO] [stdout] std::io::Cursor [INFO] [stdout] and 10 others [INFO] [stdout] note: required by a bound in `async_compression::tokio::bufread::BzEncoder::::with_quality` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/async-compression-0.4.18/src/tokio/bufread/mod.rs:10:1 [INFO] [stdout] | [INFO] [stdout] 10 | algos!(tokio::bufread); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | required by a bound in this associated function [INFO] [stdout] | required by this bound in `BzEncoder::::with_quality` [INFO] [stdout] = note: this error originates in the macro `encoder` which comes from the expansion of the macro `algos` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `async_channel::Receiver: AsyncBufRead` is not satisfied [INFO] [stdout] --> src/async_channel.rs:159:46 [INFO] [stdout] | [INFO] [stdout] 159 | let bz_encoder = BzEncoder::with_quality(compress_rx, Level::Best); [INFO] [stdout] | ----------------------- ^^^^^^^^^^^ the trait `AsyncBufRead` is not implemented for `async_channel::Receiver` [INFO] [stdout] | | [INFO] [stdout] | required by a bound introduced by this call [INFO] [stdout] | [INFO] [stdout] = help: the following other types implement trait `AsyncBufRead`: [INFO] [stdout] &[u8] [INFO] [stdout] &mut T [INFO] [stdout] Box [INFO] [stdout] BufStream [INFO] [stdout] Pin

[INFO] [stdout] async_compression::tokio::write::BzDecoder [INFO] [stdout] async_compression::tokio::write::BzEncoder [INFO] [stdout] std::io::Cursor [INFO] [stdout] and 10 others [INFO] [stdout] note: required by a bound in `async_compression::tokio::bufread::BzEncoder::::with_quality` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/async-compression-0.4.18/src/tokio/bufread/mod.rs:10:1 [INFO] [stdout] | [INFO] [stdout] 10 | algos!(tokio::bufread); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | required by a bound in this associated function [INFO] [stdout] | required by this bound in `BzEncoder::::with_quality` [INFO] [stdout] = note: this error originates in the macro `encoder` which comes from the expansion of the macro `algos` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `result` [INFO] [stdout] --> src/functions.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let result = loop { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/ownership.rs:13:13 [INFO] [stdout] | [INFO] [stdout] 13 | let s = "hello"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/ownership.rs:14:13 [INFO] [stdout] | [INFO] [stdout] 14 | let s = String::from("hello"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/ownership.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let y = x; // Copy [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/ownership.rs:3:13 [INFO] [stdout] | [INFO] [stdout] 3 | let x = String::from("world"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/ownership.rs:7:13 [INFO] [stdout] | [INFO] [stdout] 7 | let x = "hello"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/ownership.rs:8:13 [INFO] [stdout] | [INFO] [stdout] 8 | let y = 22; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> src/references.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let r1 = &mut s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hello` [INFO] [stdout] --> src/slices.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let hello = &s[..5]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `world` [INFO] [stdout] --> src/slices.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let world = &s[6..]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_world` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hello_world` [INFO] [stdout] --> src/slices.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let hello_world = &s[..]; [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hello_world` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/slices.rs:24:13 [INFO] [stdout] | [INFO] [stdout] 24 | let mut s = String::from("hello world"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `word` [INFO] [stdout] --> src/slices.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | let word = first_word(&s2); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_word` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `slice` [INFO] [stdout] --> src/slices.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let slice = &a[..2]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/slices.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let mut s = String::from("hello world"); [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/slices.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let mut s = String::from("hello world"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/variables.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let a = 99_222; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/variables.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let b = 0xff; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/variables.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 11 | let c = 0o77; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> src/variables.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let d = 0b1111_0000; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/variables.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let e = b'A'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/variables.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let f: u8 = 255; [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/variables.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let f = 2.0; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `g` [INFO] [stdout] --> src/variables.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let g: f32 = 3.0; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_g` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sum` [INFO] [stdout] --> src/variables.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let sum = 5 + 10; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `difference` [INFO] [stdout] --> src/variables.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let difference = 95.5 - 4.3; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difference` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `product` [INFO] [stdout] --> src/variables.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let product = 4 * 30; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_product` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `quotient` [INFO] [stdout] --> src/variables.rs:23:9 [INFO] [stdout] | [INFO] [stdout] 23 | let quotient = 56.7 / 32.2; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_quotient` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reminder` [INFO] [stdout] --> src/variables.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let reminder = 43 % 5; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reminder` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `result` [INFO] [stdout] --> src/functions.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let result = loop { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/variables.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | let t = true; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/variables.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | let f = false; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/variables.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let c = 'z'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `heart_eyed_cat` [INFO] [stdout] --> src/variables.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let heart_eyed_cat = '😻'; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heart_eyed_cat` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/variables.rs:33:10 [INFO] [stdout] | [INFO] [stdout] 33 | let (name, count) = tup; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `count` [INFO] [stdout] --> src/variables.rs:33:16 [INFO] [stdout] | [INFO] [stdout] 33 | let (name, count) = tup; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_count` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `count` [INFO] [stdout] --> src/variables.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 34 | let count = tup.1; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_count` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `not_found` [INFO] [stdout] --> src/variables.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | let not_found = error_codes[1]; [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_not_found` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `byte` [INFO] [stdout] --> src/variables.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let byte = [0; 8]; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_byte` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/ownership.rs:13:13 [INFO] [stdout] | [INFO] [stdout] 13 | let s = "hello"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/ownership.rs:14:13 [INFO] [stdout] | [INFO] [stdout] 14 | let s = String::from("hello"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/ownership.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let y = x; // Copy [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/ownership.rs:3:13 [INFO] [stdout] | [INFO] [stdout] 3 | let x = String::from("world"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/ownership.rs:7:13 [INFO] [stdout] | [INFO] [stdout] 7 | let x = "hello"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/ownership.rs:8:13 [INFO] [stdout] | [INFO] [stdout] 8 | let y = 22; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> src/references.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let r1 = &mut s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hello` [INFO] [stdout] --> src/slices.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let hello = &s[..5]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `world` [INFO] [stdout] --> src/slices.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let world = &s[6..]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_world` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hello_world` [INFO] [stdout] --> src/slices.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let hello_world = &s[..]; [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hello_world` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/slices.rs:24:13 [INFO] [stdout] | [INFO] [stdout] 24 | let mut s = String::from("hello world"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `word` [INFO] [stdout] --> src/slices.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | let word = first_word(&s2); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_word` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `slice` [INFO] [stdout] --> src/slices.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let slice = &a[..2]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/slices.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let mut s = String::from("hello world"); [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/slices.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let mut s = String::from("hello world"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/variables.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let a = 99_222; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/variables.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let b = 0xff; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/variables.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 11 | let c = 0o77; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> src/variables.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let d = 0b1111_0000; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/variables.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let e = b'A'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/variables.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let f: u8 = 255; [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/variables.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let f = 2.0; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `g` [INFO] [stdout] --> src/variables.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let g: f32 = 3.0; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_g` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sum` [INFO] [stdout] --> src/variables.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | let sum = 5 + 10; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `difference` [INFO] [stdout] --> src/variables.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let difference = 95.5 - 4.3; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difference` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `product` [INFO] [stdout] --> src/variables.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let product = 4 * 30; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_product` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `quotient` [INFO] [stdout] --> src/variables.rs:23:9 [INFO] [stdout] | [INFO] [stdout] 23 | let quotient = 56.7 / 32.2; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_quotient` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reminder` [INFO] [stdout] --> src/variables.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let reminder = 43 % 5; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reminder` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/variables.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | let t = true; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/variables.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | let f = false; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/variables.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let c = 'z'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `heart_eyed_cat` [INFO] [stdout] --> src/variables.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let heart_eyed_cat = '😻'; [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heart_eyed_cat` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/variables.rs:33:10 [INFO] [stdout] | [INFO] [stdout] 33 | let (name, count) = tup; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `count` [INFO] [stdout] --> src/variables.rs:33:16 [INFO] [stdout] | [INFO] [stdout] 33 | let (name, count) = tup; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_count` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `count` [INFO] [stdout] --> src/variables.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 34 | let count = tup.1; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_count` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `not_found` [INFO] [stdout] --> src/variables.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | let not_found = error_codes[1]; [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_not_found` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `byte` [INFO] [stdout] --> src/variables.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let byte = [0; 8]; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_byte` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0061, E0277. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0061`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-training` (bin "rust-training") due to 3 previous errors; 38 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] Some errors have detailed explanations: E0061, E0277. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0061`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-training` (bin "rust-training" test) due to 3 previous errors; 38 warnings emitted [INFO] running `Command { std: "docker" "inspect" "6b60bf629bf66d077b615266f54c986a821a1427ad31d3809c1205fa2f6110a3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6b60bf629bf66d077b615266f54c986a821a1427ad31d3809c1205fa2f6110a3", kill_on_drop: false }` [INFO] [stdout] 6b60bf629bf66d077b615266f54c986a821a1427ad31d3809c1205fa2f6110a3