[INFO] cloning repository https://github.com/11MK/100-exercises-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/11MK/100-exercises-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F11MK%2F100-exercises-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F11MK%2F100-exercises-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9e7da6766b4d1615f764cae237f14bfa65c86c44
[INFO] checking 11MK/100-exercises-rust against try#54cf65b8d066c082e536455049b95943cf30378f for pr-151920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F11MK%2F100-exercises-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/11MK/100-exercises-rust
[INFO] finished tweaking git repo https://github.com/11MK/100-exercises-rust
[INFO] tweaked toml for git repo https://github.com/11MK/100-exercises-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/11MK/100-exercises-rust on toolchain 54cf65b8d066c082e536455049b95943cf30378f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/11MK/100-exercises-rust 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" "+54cf65b8d066c082e536455049b95943cf30378f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba917b4aea631549b28b7f8ce9e8cf2a9ff8943287a6f8c9bd8956bc238c6bab
[INFO] running `Command { std: "docker" "start" "-a" "ba917b4aea631549b28b7f8ce9e8cf2a9ff8943287a6f8c9bd8956bc238c6bab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba917b4aea631549b28b7f8ce9e8cf2a9ff8943287a6f8c9bd8956bc238c6bab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba917b4aea631549b28b7f8ce9e8cf2a9ff8943287a6f8c9bd8956bc238c6bab", kill_on_drop: false }`
[INFO] [stdout] ba917b4aea631549b28b7f8ce9e8cf2a9ff8943287a6f8c9bd8956bc238c6bab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7170bb6b31b3faa000967601727b4d147c76224e9ca72fed268646c41a1c8c44
[INFO] running `Command { std: "docker" "start" "-a" "7170bb6b31b3faa000967601727b4d147c76224e9ca72fed268646c41a1c8c44", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.82
[INFO] [stderr]     Checking common v0.1.0 (/opt/rustwide/workdir/helpers/common)
[INFO] [stderr]    Compiling thiserror v1.0.60
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling anyhow v1.0.83
[INFO] [stderr]     Checking outro_03 v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/13_outro)
[INFO] [stderr]     Checking outro_02 v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/12_outro)
[INFO] [stderr]     Checking if_else v0.1.0 (/opt/rustwide/workdir/exercises/02_basic_calculator/03_if_else)
[INFO] [stderr]     Checking packages v0.1.0 (/opt/rustwide/workdir/exercises/05_ticket_v2/10_packages)
[INFO] [stderr]     Checking arrays v0.1.0 (/opt/rustwide/workdir/exercises/06_ticket_management/01_arrays)
[INFO] [stderr]     Checking assoc_vs_generic v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/09_assoc_vs_generic)
[INFO] [stderr]     Checking static v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/02_static)
[INFO] [stderr]     Checking copy v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/11_copy)
[INFO] [stderr]     Checking sync v0.1.0 (/opt/rustwide/workdir/exercises/07_threads/14_sync)
[INFO] [stderr]     Checking intro_08 v0.1.0 (/opt/rustwide/workdir/exercises/08_futures/00_intro)
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]  --> exercises/02_basic_calculator/03_if_else/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn is_even(n: u32) -> bool {
[INFO] [stdout]   |            ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_even` is never used
[INFO] [stdout]  --> exercises/02_basic_calculator/03_if_else/src/lib.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn is_even(n: u32) -> bool {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `day`
[INFO] [stdout]   --> exercises/06_ticket_management/01_arrays/src/lib.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn get_temperature(&self, day: Weekday) -> Option<i32> {
[INFO] [stdout]    |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_day`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `day`
[INFO] [stdout]   --> exercises/06_ticket_management/01_arrays/src/lib.rs:26:39
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn set_temperature(&mut self, day: Weekday, temperature: i32) {
[INFO] [stdout]    |                                       ^^^ help: if this is intentional, prefix it with an underscore: `_day`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `temperature`
[INFO] [stdout]   --> exercises/06_ticket_management/01_arrays/src/lib.rs:26:53
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn set_temperature(&mut self, day: Weekday, temperature: i32) {
[INFO] [stdout]    |                                                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_temperature`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking visibility v0.1.0 (/opt/rustwide/workdir/exercises/03_ticket_v1/04_visibility)
[INFO] [stdout] error[E0432]: unresolved import `packages`
[INFO] [stdout]  --> exercises/05_ticket_v2/10_packages/src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use packages::hello_world;
[INFO] [stdout]   |     ^^^^^^^^ use of unresolved module or unlinked crate `packages`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `packages`, use `cargo add packages` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr]     Checking trait_ v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/01_trait)
[INFO] [stdout] error[E0432]: unresolved import `super::Power`
[INFO] [stdout]   --> exercises/04_traits/09_assoc_vs_generic/src/lib.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     use super::Power;
[INFO] [stdout]    |         ^^^^^^^^^^^^ no `Power` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking str_slice v0.1.0 (/opt/rustwide/workdir/exercises/04_traits/05_str_slice)
[INFO] [stdout] error[E0369]: cannot add `WrappingU32` to `WrappingU32`
[INFO] [stdout]   --> exercises/04_traits/11_copy/src/lib.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 |         assert_eq!(x + y + y + z, WrappingU32::new(103));
[INFO] [stdout]    |                    - ^ - WrappingU32
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    WrappingU32
[INFO] [stdout]    |
[INFO] [stdout] note: an implementation of `Add` might be missing for `WrappingU32`
[INFO] [stdout]   --> exercises/04_traits/11_copy/src/lib.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub struct WrappingU32 {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^ must implement `Add`
[INFO] [stdout] note: the trait `Add` must be implemented
[INFO] [stdout]   --> /rustc/54cf65b8d066c082e536455049b95943cf30378f/library/core/src/ops/arith.rs:77:0
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `packages` (bin "packages" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0369`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> exercises/07_threads/02_static/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `slice`
[INFO] [stdout]  --> exercises/07_threads/02_static/src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn sum(slice: &'static [i32]) -> i32 {
[INFO] [stdout]   |            ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `outro` is never used
[INFO] [stdout]  --> exercises/07_threads/14_sync/src/lib.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn outro() -> &'static str {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `copy` (lib test) due to 1 previous error
[INFO] [stdout] error[E0599]: no method named `power` found for type `u32` in the current scope
[INFO] [stdout]   --> exercises/04_traits/09_assoc_vs_generic/src/lib.rs:22:28
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let x: u32 = 2_u32.power(3u16);
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `pow` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 22 -         let x: u32 = 2_u32.power(3u16);
[INFO] [stdout] 22 +         let x: u32 = 2_u32.pow(3u16);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `outro_02::Order`
[INFO] [stdout]  --> exercises/03_ticket_v1/12_outro/tests/integration.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use outro_02::Order;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^ no `Order` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ticket` is never constructed
[INFO] [stdout]  --> exercises/03_ticket_v1/04_visibility/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 |     struct Ticket {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> exercises/03_ticket_v1/04_visibility/src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     impl Ticket {
[INFO] [stdout]   |     ----------- associated function in this implementation
[INFO] [stdout] 9 |         fn new(title: String, description: String, status: String) -> Ticket {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `outro_02` (test "integration") due to 1 previous error
[INFO] [stdout] error[E0599]: no method named `power` found for type `u32` in the current scope
[INFO] [stdout]   --> exercises/04_traits/09_assoc_vs_generic/src/lib.rs:28:28
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let x: u32 = 2_u32.power(3u32);
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `pow` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 28 -         let x: u32 = 2_u32.power(3u32);
[INFO] [stdout] 28 +         let x: u32 = 2_u32.pow(3u32);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `power` found for type `u32` in the current scope
[INFO] [stdout]   --> exercises/04_traits/09_assoc_vs_generic/src/lib.rs:34:28
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let x: u32 = 2_u32.power(&3u32);
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `pow` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 34 -         let x: u32 = 2_u32.power(&3u32);
[INFO] [stdout] 34 +         let x: u32 = 2_u32.pow(&3u32);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `outro_03::SaturatingU16`
[INFO] [stdout]  --> exercises/04_traits/13_outro/tests/integration.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use outro_03::SaturatingU16;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^ no `SaturatingU16` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `assoc_vs_generic` (lib test) due to 4 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `outro_03` (test "integration") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "7170bb6b31b3faa000967601727b4d147c76224e9ca72fed268646c41a1c8c44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7170bb6b31b3faa000967601727b4d147c76224e9ca72fed268646c41a1c8c44", kill_on_drop: false }`
[INFO] [stdout] 7170bb6b31b3faa000967601727b4d147c76224e9ca72fed268646c41a1c8c44
