[INFO] cloning repository https://github.com/Mec-iS/rust-algos-illuminated [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mec-iS/rust-algos-illuminated" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMec-iS%2Frust-algos-illuminated", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMec-iS%2Frust-algos-illuminated'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e9b7e2a77cfe1d878f4b30043b1e25a1561476db [INFO] checking Mec-iS/rust-algos-illuminated against beta for pr-78714 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMec-iS%2Frust-algos-illuminated" "/workspace/builds/worker-8/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Mec-iS/rust-algos-illuminated on toolchain beta [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Mec-iS/rust-algos-illuminated [INFO] finished tweaking git repo https://github.com/Mec-iS/rust-algos-illuminated [INFO] tweaked toml for git repo https://github.com/Mec-iS/rust-algos-illuminated written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate git repo https://github.com/Mec-iS/rust-algos-illuminated already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f846aa64854e8eb78378df66e911b5ad41dfff3001310e679f470af779ea036d [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "f846aa64854e8eb78378df66e911b5ad41dfff3001310e679f470af779ea036d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f846aa64854e8eb78378df66e911b5ad41dfff3001310e679f470af779ea036d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f846aa64854e8eb78378df66e911b5ad41dfff3001310e679f470af779ea036d", kill_on_drop: false }` [INFO] [stdout] f846aa64854e8eb78378df66e911b5ad41dfff3001310e679f470af779ea036d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 074c122cb7c538a4c7913b6d21f1430ebfa4782c9f8daf8c06319fd6f85eb046 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "074c122cb7c538a4c7913b6d21f1430ebfa4782c9f8daf8c06319fd6f85eb046", kill_on_drop: false }` [INFO] [stderr] Checking rust-algos-illuminated v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct is never constructed: `Queue` [INFO] [stdout] --> src/other/mod.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct Queue { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `push` [INFO] [stdout] --> src/other/mod.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 12 | pub fn push(&mut self, element: char) -> () { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `pop_raw` [INFO] [stdout] --> src/other/mod.rs:17:12 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn pop_raw(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `pop_swap` [INFO] [stdout] --> src/other/mod.rs:35:12 [INFO] [stdout] | [INFO] [stdout] 35 | pub fn pop_swap(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `split` [INFO] [stdout] --> src/other/mod.rs:55:12 [INFO] [stdout] | [INFO] [stdout] 55 | pub fn split(self) -> (Vec, Vec) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/other/mod.rs:60:12 [INFO] [stdout] | [INFO] [stdout] 60 | pub fn new() -> Queue { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Queue` [INFO] [stdout] --> src/other/mod.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct Queue { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `push` [INFO] [stdout] --> src/other/mod.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 12 | pub fn push(&mut self, element: char) -> () { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `pop_raw` [INFO] [stdout] --> src/other/mod.rs:17:12 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn pop_raw(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `pop_swap` [INFO] [stdout] --> src/other/mod.rs:35:12 [INFO] [stdout] | [INFO] [stdout] 35 | pub fn pop_swap(&mut self) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `split` [INFO] [stdout] --> src/other/mod.rs:55:12 [INFO] [stdout] | [INFO] [stdout] 55 | pub fn split(self) -> (Vec, Vec) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/other/mod.rs:60:12 [INFO] [stdout] | [INFO] [stdout] 60 | pub fn new() -> Queue { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:106:34 [INFO] [stdout] | [INFO] [stdout] 106 | pub extern fn selectionSort(arr: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(improper_ctypes_definitions)]` on by default [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:106:47 [INFO] [stdout] | [INFO] [stdout] 106 | pub extern fn selectionSort(arr: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:143:39 [INFO] [stdout] | [INFO] [stdout] 143 | pub extern fn MergeSelectionSort(arr: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:143:52 [INFO] [stdout] | [INFO] [stdout] 143 | pub extern fn MergeSelectionSort(arr: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:170:24 [INFO] [stdout] | [INFO] [stdout] 170 | pub extern fn Merge(c: Vec, d: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:170:37 [INFO] [stdout] | [INFO] [stdout] 170 | pub extern fn Merge(c: Vec, d: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:170:50 [INFO] [stdout] | [INFO] [stdout] 170 | pub extern fn Merge(c: Vec, d: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:106:34 [INFO] [stdout] | [INFO] [stdout] 106 | pub extern fn selectionSort(arr: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(improper_ctypes_definitions)]` on by default [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:106:47 [INFO] [stdout] | [INFO] [stdout] 106 | pub extern fn selectionSort(arr: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:143:39 [INFO] [stdout] | [INFO] [stdout] 143 | pub extern fn MergeSelectionSort(arr: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:143:52 [INFO] [stdout] | [INFO] [stdout] 143 | pub extern fn MergeSelectionSort(arr: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:170:24 [INFO] [stdout] | [INFO] [stdout] 170 | pub extern fn Merge(c: Vec, d: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:170:37 [INFO] [stdout] | [INFO] [stdout] 170 | pub extern fn Merge(c: Vec, d: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` fn uses type `Vec`, which is not FFI-safe [INFO] [stdout] --> src/chapter_one/mod.rs:170:50 [INFO] [stdout] | [INFO] [stdout] 170 | pub extern fn Merge(c: Vec, d: Vec) -> Vec { [INFO] [stdout] | ^^^^^^^^ not FFI-safe [INFO] [stdout] | [INFO] [stdout] = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct [INFO] [stdout] = note: this struct has unspecified layout [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/main.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(test)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/main.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(test)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-algos-illuminated` [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "074c122cb7c538a4c7913b6d21f1430ebfa4782c9f8daf8c06319fd6f85eb046", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "074c122cb7c538a4c7913b6d21f1430ebfa4782c9f8daf8c06319fd6f85eb046", kill_on_drop: false }` [INFO] [stdout] 074c122cb7c538a4c7913b6d21f1430ebfa4782c9f8daf8c06319fd6f85eb046