[INFO] cloning repository https://github.com/elroykanye/rust-50-coding-challenges
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elroykanye/rust-50-coding-challenges" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felroykanye%2Frust-50-coding-challenges", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felroykanye%2Frust-50-coding-challenges'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6bdfdc06448d953643d8720a6bf98f22409adfe9
[INFO] checking elroykanye/rust-50-coding-challenges against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felroykanye%2Frust-50-coding-challenges" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elroykanye/rust-50-coding-challenges on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/elroykanye/rust-50-coding-challenges
[INFO] finished tweaking git repo https://github.com/elroykanye/rust-50-coding-challenges
[INFO] tweaked toml for git repo https://github.com/elroykanye/rust-50-coding-challenges written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/elroykanye/rust-50-coding-challenges already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 704e2c69ecc6de5da4422f1b49a3dc6380af1dc528712a7dbaa933c236fe79b8
[INFO] running `Command { std: "docker" "start" "-a" "704e2c69ecc6de5da4422f1b49a3dc6380af1dc528712a7dbaa933c236fe79b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "704e2c69ecc6de5da4422f1b49a3dc6380af1dc528712a7dbaa933c236fe79b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "704e2c69ecc6de5da4422f1b49a3dc6380af1dc528712a7dbaa933c236fe79b8", kill_on_drop: false }`
[INFO] [stdout] 704e2c69ecc6de5da4422f1b49a3dc6380af1dc528712a7dbaa933c236fe79b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b8ea95e2222e0147da790cf5b8d28119ec9a7dd55e6781bec82d3c74d333086
[INFO] running `Command { std: "docker" "start" "-a" "4b8ea95e2222e0147da790cf5b8d28119ec9a7dd55e6781bec82d3c74d333086", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-50-code-exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0435]: attempt to use a non-constant value in a constant
[INFO] [stdout]    --> src/part_one.rs:109:38
[INFO] [stdout]     |
[INFO] [stdout] 109 |     const size: usize = count_array(&arr);
[INFO] [stdout]     |     ----------                       ^^^ non-constant value
[INFO] [stdout]     |     |
[INFO] [stdout]     |     help: consider using `let` instead of `const`: `let size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0435]: attempt to use a non-constant value in a constant
[INFO] [stdout]    --> src/part_one.rs:121:33
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let mut i: usize = 0;
[INFO] [stdout]     |      -------- help: consider using `const` instead of `let`: `const i`
[INFO] [stdout] ...
[INFO] [stdout] 121 |     let mut final_result: [i32; i] = [0; i];
[INFO] [stdout]     |                                 ^ non-constant value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0435]: attempt to use a non-constant value in a constant
[INFO] [stdout]    --> src/part_one.rs:121:42
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let mut i: usize = 0;
[INFO] [stdout]     |      -------- help: consider using `const` instead of `let`: `const i`
[INFO] [stdout] ...
[INFO] [stdout] 121 |     let mut final_result: [i32; i] = [0; i];
[INFO] [stdout]     |                                          ^ non-constant value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0435]: attempt to use a non-constant value in a constant
[INFO] [stdout]    --> src/part_one.rs:109:38
[INFO] [stdout]     |
[INFO] [stdout] 109 |     const size: usize = count_array(&arr);
[INFO] [stdout]     |     ----------                       ^^^ non-constant value
[INFO] [stdout]     |     |
[INFO] [stdout]     |     help: consider using `let` instead of `const`: `let size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0435]: attempt to use a non-constant value in a constant
[INFO] [stdout]    --> src/part_one.rs:121:33
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let mut i: usize = 0;
[INFO] [stdout]     |      -------- help: consider using `const` instead of `let`: `const i`
[INFO] [stdout] ...
[INFO] [stdout] 121 |     let mut final_result: [i32; i] = [0; i];
[INFO] [stdout]     |                                 ^ non-constant value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0435]: attempt to use a non-constant value in a constant
[INFO] [stdout]    --> src/part_one.rs:121:42
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let mut i: usize = 0;
[INFO] [stdout]     |      -------- help: consider using `const` instead of `let`: `const i`
[INFO] [stdout] ...
[INFO] [stdout] 121 |     let mut final_result: [i32; i] = [0; i];
[INFO] [stdout]     |                                          ^ non-constant value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-50-code-exercises`
[INFO] [stdout] error[E0277]: the size for values of type `[i32]` cannot be known at compilation time
[INFO] [stdout]    --> src/part_one.rs:106:24
[INFO] [stdout]     |
[INFO] [stdout] 106 | pub fn exercise_twelve(arr: [i32]) -> &'static [i32] {
[INFO] [stdout]     |                        ^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Sized` is not implemented for `[i32]`
[INFO] [stdout]     = help: unsized fn params are gated as an unstable feature
[INFO] [stdout] help: function arguments must have a statically known size, borrowed types always have a known size
[INFO] [stdout]     |
[INFO] [stdout] 106 | pub fn exercise_twelve(arr: &[i32]) -> &'static [i32] {
[INFO] [stdout]     |                             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] Some errors have detailed explanations: E0277, E0435.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `[i32]` cannot be known at compilation time
[INFO] [stdout]    --> src/part_one.rs:106:24
[INFO] [stdout]     |
[INFO] [stdout] 106 | pub fn exercise_twelve(arr: [i32]) -> &'static [i32] {
[INFO] [stdout]     |                        ^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Sized` is not implemented for `[i32]`
[INFO] [stdout]     = help: unsized fn params are gated as an unstable feature
[INFO] [stdout] help: function arguments must have a statically known size, borrowed types always have a known size
[INFO] [stdout]     |
[INFO] [stdout] 106 | pub fn exercise_twelve(arr: &[i32]) -> &'static [i32] {
[INFO] [stdout]     |                             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0435.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4b8ea95e2222e0147da790cf5b8d28119ec9a7dd55e6781bec82d3c74d333086", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b8ea95e2222e0147da790cf5b8d28119ec9a7dd55e6781bec82d3c74d333086", kill_on_drop: false }`
[INFO] [stdout] 4b8ea95e2222e0147da790cf5b8d28119ec9a7dd55e6781bec82d3c74d333086