[INFO] cloning repository https://github.com/darylhjd/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/darylhjd/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarylhjd%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarylhjd%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b539e1230978bf3e7259487667214072f9fb01a
[INFO] checking darylhjd/learning-rust against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarylhjd%2Flearning-rust" "/workspace/builds/worker-115/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-115/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/darylhjd/learning-rust on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/darylhjd/learning-rust
[INFO] finished tweaking git repo https://github.com/darylhjd/learning-rust
[INFO] tweaked toml for git repo https://github.com/darylhjd/learning-rust written to /workspace/builds/worker-115/source/Cargo.toml
[INFO] crate git repo https://github.com/darylhjd/learning-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02b678a924b660a47b197ba4427ebcfc2338ee2e37c62092293468d139e25e07
[INFO] running `Command { std: "docker" "start" "-a" "02b678a924b660a47b197ba4427ebcfc2338ee2e37c62092293468d139e25e07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02b678a924b660a47b197ba4427ebcfc2338ee2e37c62092293468d139e25e07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02b678a924b660a47b197ba4427ebcfc2338ee2e37c62092293468d139e25e07", kill_on_drop: false }`
[INFO] [stdout] 02b678a924b660a47b197ba4427ebcfc2338ee2e37c62092293468d139e25e07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f1d11f159218ad96b1e97f11e4cfec129d094232e196c18bc1791ca1290ff95
[INFO] running `Command { std: "docker" "start" "-a" "7f1d11f159218ad96b1e97f11e4cfec129d094232e196c18bc1791ca1290ff95", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking quick-xml v0.22.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking learning-rust v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:87:31
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let result = hanoi(3, Peg::A, Peg::B, Peg::C);
[INFO] [stdout]    |                               ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:87:39
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let result = hanoi(3, Peg::A, Peg::B, Peg::C);
[INFO] [stdout]    |                                       ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:87:47
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let result = hanoi(3, Peg::A, Peg::B, Peg::C);
[INFO] [stdout]    |                                               ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:88:26
[INFO] [stdout]    |
[INFO] [stdout] 88 |         assert_eq!(vec![(Peg::A, Peg::C),
[INFO] [stdout]    |                          ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:88:34
[INFO] [stdout]    |
[INFO] [stdout] 88 |         assert_eq!(vec![(Peg::A, Peg::C),
[INFO] [stdout]    |                                  ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:89:26
[INFO] [stdout]    |
[INFO] [stdout] 89 |                         (Peg::A, Peg::B),
[INFO] [stdout]    |                          ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:89:34
[INFO] [stdout]    |
[INFO] [stdout] 89 |                         (Peg::A, Peg::B),
[INFO] [stdout]    |                                  ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:90:26
[INFO] [stdout]    |
[INFO] [stdout] 90 |                         (Peg::C, Peg::B),
[INFO] [stdout]    |                          ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:90:34
[INFO] [stdout]    |
[INFO] [stdout] 90 |                         (Peg::C, Peg::B),
[INFO] [stdout]    |                                  ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:91:26
[INFO] [stdout]    |
[INFO] [stdout] 91 |                         (Peg::A, Peg::C),
[INFO] [stdout]    |                          ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:91:34
[INFO] [stdout]    |
[INFO] [stdout] 91 |                         (Peg::A, Peg::C),
[INFO] [stdout]    |                                  ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:92:26
[INFO] [stdout]    |
[INFO] [stdout] 92 |                         (Peg::B, Peg::A),
[INFO] [stdout]    |                          ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:92:34
[INFO] [stdout]    |
[INFO] [stdout] 92 |                         (Peg::B, Peg::A),
[INFO] [stdout]    |                                  ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:93:26
[INFO] [stdout]    |
[INFO] [stdout] 93 |                         (Peg::B, Peg::C),
[INFO] [stdout]    |                          ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:93:34
[INFO] [stdout]    |
[INFO] [stdout] 93 |                         (Peg::B, Peg::C),
[INFO] [stdout]    |                                  ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:94:26
[INFO] [stdout]    |
[INFO] [stdout] 94 |                         (Peg::A, Peg::C)], result);
[INFO] [stdout]    |                          ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Peg`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:94:34
[INFO] [stdout]    |
[INFO] [stdout] 94 |                         (Peg::A, Peg::C)], result);
[INFO] [stdout]    |                                  ^^^ use of undeclared type `Peg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `sum` in this scope
[INFO] [stdout]   --> src/hw01/tests_provided.rs:18:20
[INFO] [stdout]    |
[INFO] [stdout] 18 |         assert_eq!(sum(&array), 15);
[INFO] [stdout]    |                    ^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use crate::hw01::problem1::sum;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `dedup` in this scope
[INFO] [stdout]   --> src/hw01/tests_provided.rs:26:20
[INFO] [stdout]    |
[INFO] [stdout] 26 |         assert_eq!(dedup(&vs), vec![1, 2, 3, 4]);
[INFO] [stdout]    |                    ^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use crate::hw01::problem1::dedup;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `filter` in this scope
[INFO] [stdout]   --> src/hw01/tests_provided.rs:38:20
[INFO] [stdout]    |
[INFO] [stdout] 38 |         assert_eq!(filter(&vs, &even_predicate), vec![2, 4]);
[INFO] [stdout]    |                    ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use crate::hw01::problem1::filter;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `mat_mult` in this scope
[INFO] [stdout]   --> src/hw01/tests_provided.rs:56:22
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let result = mat_mult(&mat1, &mat2);
[INFO] [stdout]    |                      ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 47 |     use crate::hw01::problem2::mat_mult;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `sieve` in this scope
[INFO] [stdout]   --> src/hw01/tests_provided.rs:74:42
[INFO] [stdout]    |
[INFO] [stdout] 74 |         assert_eq!(vec![2, 3, 5, 7, 11], sieve(12));
[INFO] [stdout]    |                                          ^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 70 |     use crate::hw01::problem3::sieve;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `hanoi` in this scope
[INFO] [stdout]   --> src/hw01/tests_provided.rs:87:22
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let result = hanoi(3, Peg::A, Peg::B, Peg::C);
[INFO] [stdout]    |                      ^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 83 |     use crate::hw01::problem4::hanoi;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/hw01/tests_provided.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed src/hw01/tests_provided.rs (4 fixes)
[INFO] [stdout] error: aborting due to 23 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learning-rust` due to 24 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: function is never used: `sum`
[INFO] [stdout]  --> src/hw01/problem1.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn sum(slice: &[i32]) -> i32 {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dedup`
[INFO] [stdout]  --> src/hw01/problem1.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn dedup(vs: &Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `filter`
[INFO] [stdout]   --> src/hw01/problem1.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn filter(vs: &Vec<i32>, pred: &dyn Fn(i32) -> bool) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Matrix`
[INFO] [stdout]  --> src/hw01/problem2.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub type Matrix = Vec<Vec<f32>>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mat_mult`
[INFO] [stdout]  --> src/hw01/problem2.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn mat_mult(mat1: &Matrix, mat2: &Matrix) -> Matrix {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sieve`
[INFO] [stdout]  --> src/hw01/problem3.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn sieve(n: u32) -> Vec<u32> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A`
[INFO] [stdout]  --> src/hw01/problem4.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     A,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B`
[INFO] [stdout]  --> src/hw01/problem4.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     B,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C`
[INFO] [stdout]   --> src/hw01/problem4.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     C,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Move`
[INFO] [stdout]   --> src/hw01/problem4.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type Move = (Peg, Peg);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hanoi`
[INFO] [stdout]   --> src/hw01/problem4.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn hanoi(num_discs: u32, src: Peg, aux: Peg, dst: Peg) -> Vec<Move> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `More`
[INFO] [stdout]  --> src/hw02/first.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     More(Box<Node>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Empty`
[INFO] [stdout]  --> src/hw02/first.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Empty,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hw02/first.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/hw02/first.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn insert(&mut self, element: i32) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]   --> src/hw02/first.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn search(&self, element: i32) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/hw02/first.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn insert(&mut self, element: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]   --> src/hw02/first.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn search(&self, element: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hw03/second.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/hw03/second.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn insert(&mut self, element: T) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]   --> src/hw03/second.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn search(&self, element: T) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stderr] error: failed to migrate to next edition
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `cargo fix --edition --allow-no-vcs --allow-dirty --frozen --all --all-targets --message-format=json` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "7f1d11f159218ad96b1e97f11e4cfec129d094232e196c18bc1791ca1290ff95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f1d11f159218ad96b1e97f11e4cfec129d094232e196c18bc1791ca1290ff95", kill_on_drop: false }`
[INFO] [stdout] 7f1d11f159218ad96b1e97f11e4cfec129d094232e196c18bc1791ca1290ff95