Dec 11 07:38:30.840 INFO checking tkyk0317/rcc against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 07:38:30.840 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 11 07:38:31.279 INFO [stdout] f3f3bd0137783cb301009636fde211587c1c9a61ac5f978a34948cf0a7106e20
Dec 11 07:38:31.282 INFO running `"docker" "start" "-a" "f3f3bd0137783cb301009636fde211587c1c9a61ac5f978a34948cf0a7106e20"`
Dec 11 07:38:32.761 INFO [stderr] usermod: no changes
Dec 11 07:38:32.892 INFO [stderr]     Checking rcc v0.1.0 (/source)
Dec 11 07:38:33.990 INFO [stderr] warning: unused import: `BufWriter`
Dec 11 07:38:33.990 INFO [stderr]   --> src/main.rs:58:19
Dec 11 07:38:33.990 INFO [stderr]    |
Dec 11 07:38:33.991 INFO [stderr] 58 |     use std::io::{BufWriter, Write};
Dec 11 07:38:33.991 INFO [stderr]    |                   ^^^^^^^^^
Dec 11 07:38:33.991 INFO [stderr]    |
Dec 11 07:38:33.992 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 11 07:38:33.992 INFO [stderr] 
Dec 11 07:38:34.152 INFO [stderr] warning: unused variable: `args`
Dec 11 07:38:34.152 INFO [stderr]   --> src/semantic.rs:38:51
Dec 11 07:38:34.152 INFO [stderr]    |
Dec 11 07:38:34.152 INFO [stderr] 38 |             AstType::FuncDef(ref t, ref name, ref args, ref stmt) => {
Dec 11 07:38:34.152 INFO [stderr]    |                                                   ^^^^ help: consider using `_args` instead
Dec 11 07:38:34.152 INFO [stderr]    |
Dec 11 07:38:34.152 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 07:38:34.152 INFO [stderr] 
Dec 11 07:38:34.152 INFO [stderr] warning: unused variable: `stmt`
Dec 11 07:38:34.152 INFO [stderr]   --> src/semantic.rs:38:61
Dec 11 07:38:34.152 INFO [stderr]    |
Dec 11 07:38:34.152 INFO [stderr] 38 |             AstType::FuncDef(ref t, ref name, ref args, ref stmt) => {
Dec 11 07:38:34.152 INFO [stderr]    |                                                             ^^^^ help: consider using `_stmt` instead
Dec 11 07:38:34.152 INFO [stderr] 
Dec 11 07:38:34.473 INFO [stderr] warning: field is never used: `func_table`
Dec 11 07:38:34.473 INFO [stderr]   --> src/asm.rs:19:5
Dec 11 07:38:34.474 INFO [stderr]    |
Dec 11 07:38:34.474 INFO [stderr] 19 |     func_table: &'a SymbolTable,
Dec 11 07:38:34.474 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 07:38:34.474 INFO [stderr]    |
Dec 11 07:38:34.475 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 07:38:34.475 INFO [stderr] 
Dec 11 07:38:34.480 INFO [stderr] warning: struct is never constructed: `StringData`
Dec 11 07:38:34.480 INFO [stderr]  --> src/string.rs:2:1
Dec 11 07:38:34.481 INFO [stderr]   |
Dec 11 07:38:34.481 INFO [stderr] 2 | pub struct StringData {
Dec 11 07:38:34.481 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 11 07:38:34.481 INFO [stderr] 
Dec 11 07:38:34.482 INFO [stderr] warning: method is never used: `new`
Dec 11 07:38:34.482 INFO [stderr]   --> src/string.rs:10:5
Dec 11 07:38:34.482 INFO [stderr]    |
Dec 11 07:38:34.483 INFO [stderr] 10 |     pub fn new() -> StringData {
Dec 11 07:38:34.483 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 07:38:34.483 INFO [stderr] 
Dec 11 07:38:34.483 INFO [stderr] warning: method is never used: `push`
Dec 11 07:38:34.484 INFO [stderr]   --> src/string.rs:20:5
Dec 11 07:38:34.484 INFO [stderr]    |
Dec 11 07:38:34.484 INFO [stderr] 20 |     pub fn push(&mut self, c: char) {
Dec 11 07:38:34.485 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 07:38:34.485 INFO [stderr] 
Dec 11 07:38:34.485 INFO [stderr] warning: field is never used: `vars`
Dec 11 07:38:34.486 INFO [stderr]  --> src/semantic.rs:8:5
Dec 11 07:38:34.486 INFO [stderr]   |
Dec 11 07:38:34.486 INFO [stderr] 8 |     vars: &'a SymbolTable,
Dec 11 07:38:34.486 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 07:38:34.486 INFO [stderr] 
Dec 11 07:38:35.728 INFO [stderr] warning: unused variable: `args`
Dec 11 07:38:35.728 INFO [stderr]   --> src/semantic.rs:38:51
Dec 11 07:38:35.728 INFO [stderr]    |
Dec 11 07:38:35.729 INFO [stderr] 38 |             AstType::FuncDef(ref t, ref name, ref args, ref stmt) => {
Dec 11 07:38:35.729 INFO [stderr]    |                                                   ^^^^ help: consider using `_args` instead
Dec 11 07:38:35.729 INFO [stderr]    |
Dec 11 07:38:35.730 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 07:38:35.730 INFO [stderr] 
Dec 11 07:38:35.730 INFO [stderr] warning: unused variable: `stmt`
Dec 11 07:38:35.730 INFO [stderr]   --> src/semantic.rs:38:61
Dec 11 07:38:35.731 INFO [stderr]    |
Dec 11 07:38:35.731 INFO [stderr] 38 |             AstType::FuncDef(ref t, ref name, ref args, ref stmt) => {
Dec 11 07:38:35.731 INFO [stderr]    |                                                             ^^^^ help: consider using `_stmt` instead
Dec 11 07:38:35.731 INFO [stderr] 
Dec 11 07:38:36.380 INFO [stderr] warning: field is never used: `func_table`
Dec 11 07:38:36.380 INFO [stderr]   --> src/asm.rs:19:5
Dec 11 07:38:36.380 INFO [stderr]    |
Dec 11 07:38:36.380 INFO [stderr] 19 |     func_table: &'a SymbolTable,
Dec 11 07:38:36.380 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 07:38:36.380 INFO [stderr]    |
Dec 11 07:38:36.380 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 07:38:36.380 INFO [stderr] 
Dec 11 07:38:36.384 INFO [stderr] warning: field is never used: `vars`
Dec 11 07:38:36.384 INFO [stderr]  --> src/semantic.rs:8:5
Dec 11 07:38:36.384 INFO [stderr]   |
Dec 11 07:38:36.384 INFO [stderr] 8 |     vars: &'a SymbolTable,
Dec 11 07:38:36.384 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 07:38:36.384 INFO [stderr] 
Dec 11 07:38:36.520 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.70s
Dec 11 07:38:36.520 INFO [stderr] su: No module specific data is present
Dec 11 07:38:37.497 INFO running `"docker" "inspect" "f3f3bd0137783cb301009636fde211587c1c9a61ac5f978a34948cf0a7106e20"`
Dec 11 07:38:37.816 INFO running `"docker" "rm" "-f" "f3f3bd0137783cb301009636fde211587c1c9a61ac5f978a34948cf0a7106e20"`
Dec 11 07:38:38.128 INFO [stdout] f3f3bd0137783cb301009636fde211587c1c9a61ac5f978a34948cf0a7106e20