Dec 12 01:15:56.393 INFO checking Nazariglez/gc-mark-sweep-rs against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 01:15:56.393 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-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 12 01:15:56.859 INFO [stdout] 5dbbe07c4347ce92471a5ac128412cab40b33d5e068f3538c53425b422f5baa6
Dec 12 01:15:56.861 INFO running `"docker" "start" "-a" "5dbbe07c4347ce92471a5ac128412cab40b33d5e068f3538c53425b422f5baa6"`
Dec 12 01:15:58.083 INFO [stderr] usermod: no changes
Dec 12 01:15:58.116 INFO [stderr]     Checking gc-mark-sweep-rs v0.1.0 (/source)
Dec 12 01:15:58.560 INFO [stderr] warning: constant item is never used: `STACK_MAX`
Dec 12 01:15:58.560 INFO [stderr]  --> src/main.rs:8:1
Dec 12 01:15:58.560 INFO [stderr]   |
Dec 12 01:15:58.560 INFO [stderr] 8 | const STACK_MAX:usize = 256;
Dec 12 01:15:58.560 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:15:58.560 INFO [stderr]   |
Dec 12 01:15:58.560 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 01:15:58.560 INFO [stderr] 
Dec 12 01:15:58.560 INFO [stderr] warning: constant item is never used: `INITIAL_GC_THRESHOLD`
Dec 12 01:15:58.560 INFO [stderr]  --> src/main.rs:9:1
Dec 12 01:15:58.560 INFO [stderr]   |
Dec 12 01:15:58.560 INFO [stderr] 9 | const INITIAL_GC_THRESHOLD:usize = 10;
Dec 12 01:15:58.560 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:15:58.560 INFO [stderr] 
Dec 12 01:15:58.560 INFO [stderr] warning: type alias is never used: `RefObject`
Dec 12 01:15:58.560 INFO [stderr]   --> src/main.rs:11:1
Dec 12 01:15:58.560 INFO [stderr]    |
Dec 12 01:15:58.560 INFO [stderr] 11 | type RefObject = Rc<RefCell<Object>>;
Dec 12 01:15:58.560 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:15:58.560 INFO [stderr] 
Dec 12 01:15:58.560 INFO [stderr] warning: struct is never constructed: `Object`
Dec 12 01:15:58.560 INFO [stderr]   --> src/main.rs:13:1
Dec 12 01:15:58.560 INFO [stderr]    |
Dec 12 01:15:58.560 INFO [stderr] 13 | struct Object {
Dec 12 01:15:58.560 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 12 01:15:58.560 INFO [stderr] 
Dec 12 01:15:58.560 INFO [stderr] warning: method is never used: `new`
Dec 12 01:15:58.560 INFO [stderr]   --> src/main.rs:21:5
Dec 12 01:15:58.560 INFO [stderr]    |
Dec 12 01:15:58.560 INFO [stderr] 21 |     fn new(typ: ObjectType) -> RefObject {
Dec 12 01:15:58.560 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:15:58.560 INFO [stderr] 
Dec 12 01:15:58.560 INFO [stderr] warning: method is never used: `mark`
Dec 12 01:15:58.560 INFO [stderr]   --> src/main.rs:31:5
Dec 12 01:15:58.560 INFO [stderr]    |
Dec 12 01:15:58.560 INFO [stderr] 31 |     pub fn mark(&mut self) {
Dec 12 01:15:58.560 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:15:58.560 INFO [stderr] 
Dec 12 01:15:58.560 INFO [stderr] warning: enum is never used: `ObjectType`
Dec 12 01:15:58.560 INFO [stderr]   --> src/main.rs:46:1
Dec 12 01:15:58.560 INFO [stderr]    |
Dec 12 01:15:58.560 INFO [stderr] 46 | enum ObjectType {
Dec 12 01:15:58.560 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 12 01:15:58.560 INFO [stderr] 
Dec 12 01:15:58.560 INFO [stderr] warning: struct is never constructed: `VM`
Dec 12 01:15:58.561 INFO [stderr]   --> src/main.rs:54:1
Dec 12 01:15:58.561 INFO [stderr]    |
Dec 12 01:15:58.561 INFO [stderr] 54 | struct VM {
Dec 12 01:15:58.561 INFO [stderr]    | ^^^^^^^^^
Dec 12 01:15:58.561 INFO [stderr] 
Dec 12 01:15:58.561 INFO [stderr] warning: method is never used: `new`
Dec 12 01:15:58.561 INFO [stderr]   --> src/main.rs:64:5
Dec 12 01:15:58.561 INFO [stderr]    |
Dec 12 01:15:58.561 INFO [stderr] 64 |     fn new() -> VM {
Dec 12 01:15:58.561 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 12 01:15:58.561 INFO [stderr] 
Dec 12 01:15:58.561 INFO [stderr] warning: method is never used: `new_object`
Dec 12 01:15:58.561 INFO [stderr]   --> src/main.rs:74:5
Dec 12 01:15:58.561 INFO [stderr]    |
Dec 12 01:15:58.561 INFO [stderr] 74 |     fn new_object(&mut self, typ: ObjectType) -> RefObject {
Dec 12 01:15:58.561 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:15:58.561 INFO [stderr] 
Dec 12 01:15:58.561 INFO [stderr] warning: method is never used: `mark_all`
Dec 12 01:15:58.561 INFO [stderr]   --> src/main.rs:82:5
Dec 12 01:15:58.561 INFO [stderr]    |
Dec 12 01:15:58.561 INFO [stderr] 82 |     fn mark_all(&mut self) {
Dec 12 01:15:58.561 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:15:58.561 INFO [stderr] 
Dec 12 01:15:58.561 INFO [stderr] warning: method is never used: `sweep`
Dec 12 01:15:58.561 INFO [stderr]   --> src/main.rs:91:5
Dec 12 01:15:58.561 INFO [stderr]    |
Dec 12 01:15:58.561 INFO [stderr] 91 |     fn sweep(&mut self) {
Dec 12 01:15:58.561 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 12 01:15:58.561 INFO [stderr] 
Dec 12 01:15:58.561 INFO [stderr] warning: method is never used: `gc`
Dec 12 01:15:58.561 INFO [stderr]    --> src/main.rs:106:5
Dec 12 01:15:58.561 INFO [stderr]     |
Dec 12 01:15:58.561 INFO [stderr] 106 |     fn gc(&mut self) {
Dec 12 01:15:58.561 INFO [stderr]     |     ^^^^^^^^^^^^^^^^
Dec 12 01:15:58.561 INFO [stderr] 
Dec 12 01:15:58.561 INFO [stderr] warning: method is never used: `push`
Dec 12 01:15:58.561 INFO [stderr]    --> src/main.rs:115:5
Dec 12 01:15:58.561 INFO [stderr]     |
Dec 12 01:15:58.561 INFO [stderr] 115 |     fn push(&mut self, val:RefObject) {
Dec 12 01:15:58.561 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:15:58.561 INFO [stderr] 
Dec 12 01:15:58.561 INFO [stderr] warning: method is never used: `pop`
Dec 12 01:15:58.561 INFO [stderr]    --> src/main.rs:124:5
Dec 12 01:15:58.561 INFO [stderr]     |
Dec 12 01:15:58.561 INFO [stderr] 124 |     fn pop(&mut self) -> RefObject {
Dec 12 01:15:58.561 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:15:58.561 INFO [stderr] 
Dec 12 01:15:58.561 INFO [stderr] warning: method is never used: `push_int`
Dec 12 01:15:58.561 INFO [stderr]    --> src/main.rs:133:5
Dec 12 01:15:58.561 INFO [stderr]     |
Dec 12 01:15:58.561 INFO [stderr] 133 |     fn push_int(&mut self, val: i32) {
Dec 12 01:15:58.561 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:15:58.561 INFO [stderr] 
Dec 12 01:15:58.561 INFO [stderr] warning: method is never used: `push_pair`
Dec 12 01:15:58.561 INFO [stderr]    --> src/main.rs:138:5
Dec 12 01:15:58.561 INFO [stderr]     |
Dec 12 01:15:58.561 INFO [stderr] 138 |     fn push_pair(&mut self) {
Dec 12 01:15:58.561 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:15:58.561 INFO [stderr] 
Dec 12 01:15:58.803 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
Dec 12 01:15:58.805 INFO [stderr] su: No module specific data is present
Dec 12 01:15:59.163 INFO running `"docker" "inspect" "5dbbe07c4347ce92471a5ac128412cab40b33d5e068f3538c53425b422f5baa6"`
Dec 12 01:15:59.235 INFO running `"docker" "rm" "-f" "5dbbe07c4347ce92471a5ac128412cab40b33d5e068f3538c53425b422f5baa6"`
Dec 12 01:15:59.319 INFO [stdout] 5dbbe07c4347ce92471a5ac128412cab40b33d5e068f3538c53425b422f5baa6