Dec 06 03:53:06.469 INFO testing chrisshyi/kosarajuSCC against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 06 03:53:06.469 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 03:53:06.934 INFO [stdout] d6facf72f34b68e6fd777895ecee8cec19786234d87c89c5584b836b74c2fee2
Dec 06 03:53:06.937 INFO running `"docker" "start" "-a" "d6facf72f34b68e6fd777895ecee8cec19786234d87c89c5584b836b74c2fee2"`
Dec 06 03:53:08.376 INFO [stderr] usermod: no changes
Dec 06 03:53:08.424 INFO [stderr]    Compiling kosarajuSCC v0.1.0 (/source)
Dec 06 03:53:08.862 INFO [stderr] warning: value assigned to `tail_vertx` is never read
Dec 06 03:53:08.862 INFO [stderr]   --> src/lib.rs:34:14
Dec 06 03:53:08.862 INFO [stderr]    |
Dec 06 03:53:08.862 INFO [stderr] 34 |     let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables
Dec 06 03:53:08.863 INFO [stderr]    |              ^^^^^^^^^^
Dec 06 03:53:08.863 INFO [stderr]    |
Dec 06 03:53:08.863 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 06 03:53:08.864 INFO [stderr] 
Dec 06 03:53:08.864 INFO [stderr] warning: value assigned to `head_vertx` is never read
Dec 06 03:53:08.864 INFO [stderr]   --> src/lib.rs:34:30
Dec 06 03:53:08.864 INFO [stderr]    |
Dec 06 03:53:08.864 INFO [stderr] 34 |     let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables
Dec 06 03:53:08.864 INFO [stderr]    |                              ^^^^^^^^^^
Dec 06 03:53:08.864 INFO [stderr] 
Dec 06 03:53:08.864 INFO [stderr] warning: value assigned to `tail_vertx` is never read
Dec 06 03:53:08.864 INFO [stderr]    --> src/lib.rs:137:14
Dec 06 03:53:08.865 INFO [stderr]     |
Dec 06 03:53:08.865 INFO [stderr] 137 |     let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables
Dec 06 03:53:08.865 INFO [stderr]     |              ^^^^^^^^^^
Dec 06 03:53:08.865 INFO [stderr] 
Dec 06 03:53:08.865 INFO [stderr] warning: value assigned to `head_vertx` is never read
Dec 06 03:53:08.865 INFO [stderr]    --> src/lib.rs:137:30
Dec 06 03:53:08.865 INFO [stderr]     |
Dec 06 03:53:08.865 INFO [stderr] 137 |     let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables
Dec 06 03:53:08.865 INFO [stderr]     |                              ^^^^^^^^^^
Dec 06 03:53:08.865 INFO [stderr] 
Dec 06 03:53:08.884 INFO [stderr] warning: crate `kosarajuSCC` should have a snake case name such as `kosaraju_scc`
Dec 06 03:53:08.884 INFO [stderr]   |
Dec 06 03:53:08.884 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 06 03:53:08.884 INFO [stderr] 
Dec 06 03:53:10.148 INFO [stderr] warning: unused import: `std::fs::File`
Dec 06 03:53:10.148 INFO [stderr]  --> src/main.rs:2:5
Dec 06 03:53:10.148 INFO [stderr]   |
Dec 06 03:53:10.148 INFO [stderr] 2 | use std::fs::File;
Dec 06 03:53:10.148 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 06 03:53:10.148 INFO [stderr]   |
Dec 06 03:53:10.148 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 06 03:53:10.148 INFO [stderr] 
Dec 06 03:53:10.180 INFO [stderr] warning: crate `kosarajuSCC` should have a snake case name such as `kosaraju_scc`
Dec 06 03:53:10.180 INFO [stderr]   |
Dec 06 03:53:10.180 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 06 03:53:10.180 INFO [stderr] 
Dec 06 03:53:10.864 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.45s
Dec 06 03:53:10.864 INFO [stderr] su: No module specific data is present
Dec 06 03:53:11.378 INFO running `"docker" "inspect" "d6facf72f34b68e6fd777895ecee8cec19786234d87c89c5584b836b74c2fee2"`
Dec 06 03:53:11.641 INFO running `"docker" "rm" "-f" "d6facf72f34b68e6fd777895ecee8cec19786234d87c89c5584b836b74c2fee2"`
Dec 06 03:53:11.880 INFO [stdout] d6facf72f34b68e6fd777895ecee8cec19786234d87c89c5584b836b74c2fee2
Dec 06 03:53:11.886 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-1/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 03:53:12.484 INFO [stdout] b70699efaef77abfaa1a430e42865acf5aaaec2cce3d6b7638ca21f177daaf56
Dec 06 03:53:12.489 INFO running `"docker" "start" "-a" "b70699efaef77abfaa1a430e42865acf5aaaec2cce3d6b7638ca21f177daaf56"`
Dec 06 03:53:13.881 INFO [stderr] usermod: no changes
Dec 06 03:53:13.936 INFO [stderr]    Compiling kosarajuSCC v0.1.0 (/source)
Dec 06 03:53:14.467 INFO [stderr] warning: unused import: `std::fs::File`
Dec 06 03:53:14.467 INFO [stderr]  --> src/main.rs:2:5
Dec 06 03:53:14.467 INFO [stderr]   |
Dec 06 03:53:14.467 INFO [stderr] 2 | use std::fs::File;
Dec 06 03:53:14.467 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 06 03:53:14.467 INFO [stderr]   |
Dec 06 03:53:14.467 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 06 03:53:14.467 INFO [stderr] 
Dec 06 03:53:14.516 INFO [stderr] warning: crate `kosarajuSCC` should have a snake case name such as `kosaraju_scc`
Dec 06 03:53:14.516 INFO [stderr]   |
Dec 06 03:53:14.516 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 06 03:53:14.516 INFO [stderr] 
Dec 06 03:53:14.880 INFO [stderr] warning: value assigned to `tail_vertx` is never read
Dec 06 03:53:14.880 INFO [stderr]   --> src/lib.rs:34:14
Dec 06 03:53:14.880 INFO [stderr]    |
Dec 06 03:53:14.880 INFO [stderr] 34 |     let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables
Dec 06 03:53:14.880 INFO [stderr]    |              ^^^^^^^^^^
Dec 06 03:53:14.880 INFO [stderr]    |
Dec 06 03:53:14.880 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 06 03:53:14.880 INFO [stderr] 
Dec 06 03:53:14.880 INFO [stderr] warning: value assigned to `head_vertx` is never read
Dec 06 03:53:14.880 INFO [stderr]   --> src/lib.rs:34:30
Dec 06 03:53:14.880 INFO [stderr]    |
Dec 06 03:53:14.880 INFO [stderr] 34 |     let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables
Dec 06 03:53:14.880 INFO [stderr]    |                              ^^^^^^^^^^
Dec 06 03:53:14.880 INFO [stderr] 
Dec 06 03:53:14.881 INFO [stderr] warning: value assigned to `tail_vertx` is never read
Dec 06 03:53:14.881 INFO [stderr]    --> src/lib.rs:137:14
Dec 06 03:53:14.881 INFO [stderr]     |
Dec 06 03:53:14.881 INFO [stderr] 137 |     let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables
Dec 06 03:53:14.881 INFO [stderr]     |              ^^^^^^^^^^
Dec 06 03:53:14.881 INFO [stderr] 
Dec 06 03:53:14.881 INFO [stderr] warning: value assigned to `head_vertx` is never read
Dec 06 03:53:14.881 INFO [stderr]    --> src/lib.rs:137:30
Dec 06 03:53:14.881 INFO [stderr]     |
Dec 06 03:53:14.881 INFO [stderr] 137 |     let (mut tail_vertx, mut head_vertx) = (0, 0); // Compiler won't allow use of uninitialized variables
Dec 06 03:53:14.881 INFO [stderr]     |                              ^^^^^^^^^^
Dec 06 03:53:14.881 INFO [stderr] 
Dec 06 03:53:14.928 INFO [stderr] warning: crate `kosarajuSCC` should have a snake case name such as `kosaraju_scc`
Dec 06 03:53:14.928 INFO [stderr]   |
Dec 06 03:53:14.928 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 06 03:53:14.928 INFO [stderr] 
Dec 06 03:53:16.311 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.40s
Dec 06 03:53:16.314 INFO [stderr] su: No module specific data is present
Dec 06 03:53:17.217 INFO running `"docker" "inspect" "b70699efaef77abfaa1a430e42865acf5aaaec2cce3d6b7638ca21f177daaf56"`
Dec 06 03:53:17.470 INFO running `"docker" "rm" "-f" "b70699efaef77abfaa1a430e42865acf5aaaec2cce3d6b7638ca21f177daaf56"`
Dec 06 03:53:17.781 INFO [stdout] b70699efaef77abfaa1a430e42865acf5aaaec2cce3d6b7638ca21f177daaf56