[INFO] updating cached repository https://github.com/Delorus/rust_learning
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 85e9ac89dac5dca12156acf98619a6a7add91951
[INFO] checking Delorus/rust_learning against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDelorus%2Frust_learning" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Delorus/rust_learning on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Delorus/rust_learning
[INFO] finished tweaking git repo https://github.com/Delorus/rust_learning
[INFO] tweaked toml for git repo https://github.com/Delorus/rust_learning written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Delorus/rust_learning already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 35a615cfb51af88a309a1cb9395859bd67d7e6b2af1f2b8adf61ad9fda9f15ac
[INFO] running `"docker" "start" "-a" "35a615cfb51af88a309a1cb9395859bd67d7e6b2af1f2b8adf61ad9fda9f15ac"`
[INFO] [stderr]     Checking learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0412]: cannot find type `T` in this scope
[INFO] [stderr]   --> src/bin/adv_types.rs:18:30
[INFO] [stderr]    |
[INFO] [stderr] 18 | type Result = result::Result<T, io::Error>;
[INFO] [stderr]    |                              ^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `square`
[INFO] [stderr]   --> src/bin/methods.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn square(size: u32) -> Rectangle {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `can_hold`
[INFO] [stderr]   --> src/bin/methods.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/bin/adv_types.rs:20:22
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn never_return() -> ! {
[INFO] [stderr]    |    ------------      ^ expected `!`, found `()`
[INFO] [stderr]    |    |
[INFO] [stderr]    |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stderr]    |
[INFO] [stderr]    = note:   expected type `!`
[INFO] [stderr]            found unit type `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0412.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/bin/state_pattern.rs:47:41
[INFO] [stderr]    |
[INFO] [stderr] 47 |         pub fn request_preview(self) -> PendingReviewPost {
[INFO] [stderr]    |                ---------------          ^^^^^^^^^^^^^^^^^ expected struct `blog::PendingReviewPost`, found `()`
[INFO] [stderr]    |                |
[INFO] [stderr]    |                implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `learning`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/bin/patterns.rs:19:10
[INFO] [stderr]    |
[INFO] [stderr] 19 |         1...5 => println!("one through five"),
[INFO] [stderr]    |          ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `learning`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/bin/patterns.rs:121:45
[INFO] [stderr]     |
[INFO] [stderr] 121 |         Message::Hello { id: id_variable @ 3...7 } => {
[INFO] [stderr]     |                                             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/bin/patterns.rs:124:32
[INFO] [stderr]     |
[INFO] [stderr] 124 |         Message::Hello { id: 10...12 } => {
[INFO] [stderr]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Guess`
[INFO] [stderr]   --> src/bin/tests.rs:60:8
[INFO] [stderr]    |
[INFO] [stderr] 60 | struct Guess {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/bin/tests.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn new(value: u32) -> Guess {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `or_match`
[INFO] [stderr]  --> src/bin/patterns.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn or_match() {
[INFO] [stderr]   |    ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mutable_var`
[INFO] [stderr]  --> src/bin/variables.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn mutable_var() {
[INFO] [stderr]   |    ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `constant`
[INFO] [stderr]   --> src/bin/variables.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn constant() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `const_in_func`
[INFO] [stderr]   --> src/bin/variables.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn const_in_func() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MAX_POINTS`
[INFO] [stderr]   --> src/bin/variables.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | const MAX_POINTS: u32 = 200_000;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `multiple_vars`
[INFO] [stderr]   --> src/bin/variables.rs:26:4
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn multiple_vars() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `range_match`
[INFO] [stderr]   --> src/bin/patterns.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn range_match() {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `destruct`
[INFO] [stderr]   --> src/bin/patterns.rs:29:4
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn destruct() {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Message`
[INFO] [stderr]   --> src/bin/patterns.rs:51:6
[INFO] [stderr]    |
[INFO] [stderr] 51 | enum Message {
[INFO] [stderr]    |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `destruct_enum`
[INFO] [stderr]   --> src/bin/patterns.rs:58:4
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn destruct_enum() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ignore_several_value`
[INFO] [stderr]   --> src/bin/patterns.rs:81:4
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn ignore_several_value() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_user`
[INFO] [stderr]   --> src/bin/structures.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn create_user() {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `match_guard`
[INFO] [stderr]    --> src/bin/patterns.rs:103:4
[INFO] [stderr]     |
[INFO] [stderr] 103 | fn match_guard() {
[INFO] [stderr]     |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_user_from_another`
[INFO] [stderr]   --> src/bin/structures.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn create_user_from_another() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point`
[INFO] [stderr]   --> src/bin/structures.rs:44:8
[INFO] [stderr]    |
[INFO] [stderr] 44 | struct Point(i32, i32);
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `binding_in_match`
[INFO] [stderr]    --> src/bin/patterns.rs:113:4
[INFO] [stderr]     |
[INFO] [stderr] 113 | fn binding_in_match() {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `named_tuple`
[INFO] [stderr]   --> src/bin/structures.rs:46:4
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn named_tuple() {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest`
[INFO] [stderr]  --> src/bin/lifetime.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ImportantExcerpt`
[INFO] [stderr]   --> src/bin/lifetime.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct ImportantExcerpt<'a> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `lifetime_in_struct`
[INFO] [stderr]   --> src/bin/lifetime.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn lifetime_in_struct() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `longest_with_an_announcement`
[INFO] [stderr]   --> src/bin/lifetime.rs:42:4
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn longest_with_an_announcement<'a, T>(x: &'a str, y: &'a str, ann: T) -> &'a str
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "35a615cfb51af88a309a1cb9395859bd67d7e6b2af1f2b8adf61ad9fda9f15ac"`
[INFO] running `"docker" "rm" "-f" "35a615cfb51af88a309a1cb9395859bd67d7e6b2af1f2b8adf61ad9fda9f15ac"`
[INFO] [stdout] 35a615cfb51af88a309a1cb9395859bd67d7e6b2af1f2b8adf61ad9fda9f15ac