[INFO] cloning repository https://github.com/chrisshyi/kosarajuSCC [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chrisshyi/kosarajuSCC" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisshyi%2FkosarajuSCC", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisshyi%2FkosarajuSCC'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] fd8d6e8222600650dfcde4949060a7d698a8a26c [INFO] checking chrisshyi/kosarajuSCC against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisshyi%2FkosarajuSCC" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/chrisshyi/kosarajuSCC on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/chrisshyi/kosarajuSCC [INFO] finished tweaking git repo https://github.com/chrisshyi/kosarajuSCC [INFO] tweaked toml for git repo https://github.com/chrisshyi/kosarajuSCC written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/chrisshyi/kosarajuSCC already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "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" "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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 04aaf163f19373c907e3836e9a895adacd9a41110392a604ca8d1d97ef8fa2f7 [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" "04aaf163f19373c907e3836e9a895adacd9a41110392a604ca8d1d97ef8fa2f7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "04aaf163f19373c907e3836e9a895adacd9a41110392a604ca8d1d97ef8fa2f7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "04aaf163f19373c907e3836e9a895adacd9a41110392a604ca8d1d97ef8fa2f7", kill_on_drop: false }` [INFO] [stdout] 04aaf163f19373c907e3836e9a895adacd9a41110392a604ca8d1d97ef8fa2f7 [INFO] running `Command { std: "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" "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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 11a3caee69a8389ed9ee37a888e0ce7c66331e0d37134e74700a416d3c65acd4 [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" "11a3caee69a8389ed9ee37a888e0ce7c66331e0d37134e74700a416d3c65acd4", kill_on_drop: false }` [INFO] [stderr] Checking kosarajuSCC v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `tail_vertx` is never read [INFO] [stdout] --> src/lib.rs:34:10 [INFO] [stdout] | [INFO] [stdout] 34 | let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `head_vertx` is never read [INFO] [stdout] --> src/lib.rs:34:26 [INFO] [stdout] | [INFO] [stdout] 34 | let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `tail_vertx` is never read [INFO] [stdout] --> src/lib.rs:137:10 [INFO] [stdout] | [INFO] [stdout] 137 | let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `head_vertx` is never read [INFO] [stdout] --> src/lib.rs:137:26 [INFO] [stdout] | [INFO] [stdout] 137 | let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: crate `kosarajuSCC` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] = help: convert the identifier to snake case: `kosaraju_scc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `tail_vertx` is never read [INFO] [stdout] --> src/lib.rs:34:10 [INFO] [stdout] | [INFO] [stdout] 34 | let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `head_vertx` is never read [INFO] [stdout] --> src/lib.rs:34:26 [INFO] [stdout] | [INFO] [stdout] 34 | let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `tail_vertx` is never read [INFO] [stdout] --> src/lib.rs:137:10 [INFO] [stdout] | [INFO] [stdout] 137 | let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `head_vertx` is never read [INFO] [stdout] --> src/lib.rs:137:26 [INFO] [stdout] | [INFO] [stdout] 137 | let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fs::File` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::fs::File; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::fs::File` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::fs::File; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: crate `kosarajuSCC` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] = help: convert the identifier to snake case: `kosaraju_scc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: crate `kosarajuSCC` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] = help: convert the identifier to snake case: `kosaraju_scc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: crate `kosarajuSCC` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] = help: convert the identifier to snake case: `kosaraju_scc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.74s [INFO] running `Command { std: "docker" "inspect" "11a3caee69a8389ed9ee37a888e0ce7c66331e0d37134e74700a416d3c65acd4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "11a3caee69a8389ed9ee37a888e0ce7c66331e0d37134e74700a416d3c65acd4", kill_on_drop: false }` [INFO] [stdout] 11a3caee69a8389ed9ee37a888e0ce7c66331e0d37134e74700a416d3c65acd4