Sep 10 05:24:29.908 INFO checking Lapz/tox against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 05:24:29.908 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 05:24:29.908 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-2/try#3a2610c2a16575649896925631bf8cec4f4b1961:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 05:24:30.156 INFO blam! 2bd2e4922566d6e18cd76112622caebc9d5d9c07ae15f51362a3d2ee2561d945
Sep 10 05:24:30.158 INFO running `"docker" "start" "-a" "2bd2e4922566d6e18cd76112622caebc9d5d9c07ae15f51362a3d2ee2561d945"`
Sep 10 05:24:31.375 INFO kablam! usermod: no changes
Sep 10 05:24:31.624 INFO kablam!     Checking util v0.1.0 (file:///source/util)
Sep 10 05:24:31.625 INFO kablam!     Checking pretty_assertions v0.4.1
Sep 10 05:24:31.626 INFO kablam!    Compiling structopt-derive v0.1.6
Sep 10 05:24:31.627 INFO kablam!     Checking structopt v0.1.7
Sep 10 05:24:33.552 INFO kablam!     Checking syntax v0.1.0 (file:///source/syntax)
Sep 10 05:24:34.718 INFO kablam! warning: unused `#[macro_use]` import
Sep 10 05:24:34.718 INFO kablam!  --> syntax/src/lib.rs:2:1
Sep 10 05:24:34.718 INFO kablam!   |
Sep 10 05:24:34.718 INFO kablam! 2 | #[macro_use]
Sep 10 05:24:34.718 INFO kablam!   | ^^^^^^^^^^^^
Sep 10 05:24:34.718 INFO kablam!   |
Sep 10 05:24:34.718 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 10 05:24:34.718 INFO kablam! 
Sep 10 05:24:36.986 INFO kablam!     Checking interpreter v0.1.0 (file:///source/interpreter)
Sep 10 05:24:36.986 INFO kablam!     Checking frontend v0.1.0 (file:///source/frontend)
Sep 10 05:24:36.986 INFO kablam!     Checking vm v0.1.0 (file:///source/vm)
Sep 10 05:24:37.884 INFO kablam! warning: unused import: `syntax::ast::expr::*`
Sep 10 05:24:37.884 INFO kablam!  --> vm/src/compiler.rs:4:5
Sep 10 05:24:37.884 INFO kablam!   |
Sep 10 05:24:37.884 INFO kablam! 4 | use syntax::ast::expr::*;
Sep 10 05:24:37.884 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 10 05:24:37.902 INFO kablam!   |
Sep 10 05:24:37.902 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 10 05:24:37.902 INFO kablam! 
Sep 10 05:24:37.902 INFO kablam! warning: unused import: `syntax::ast::statement::Statement`
Sep 10 05:24:37.902 INFO kablam!  --> vm/src/compiler.rs:5:5
Sep 10 05:24:37.902 INFO kablam!   |
Sep 10 05:24:37.902 INFO kablam! 5 | use syntax::ast::statement::Statement;
Sep 10 05:24:37.902 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 05:24:37.902 INFO kablam! 
Sep 10 05:24:38.430 INFO kablam! warning: unused import: `syntax::ast::expr::*`
Sep 10 05:24:38.430 INFO kablam!  --> vm/src/compiler.rs:4:5
Sep 10 05:24:38.430 INFO kablam!   |
Sep 10 05:24:38.430 INFO kablam! 4 | use syntax::ast::expr::*;
Sep 10 05:24:38.430 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^
Sep 10 05:24:38.430 INFO kablam!   |
Sep 10 05:24:38.430 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 10 05:24:38.430 INFO kablam! 
Sep 10 05:24:38.430 INFO kablam! warning: unused import: `syntax::ast::statement::Statement`
Sep 10 05:24:38.430 INFO kablam!  --> vm/src/compiler.rs:5:5
Sep 10 05:24:38.430 INFO kablam!   |
Sep 10 05:24:38.430 INFO kablam! 5 | use syntax::ast::statement::Statement;
Sep 10 05:24:38.430 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 05:24:38.430 INFO kablam! 
Sep 10 05:24:38.598 INFO kablam! warning: unused `#[macro_use]` import
Sep 10 05:24:38.598 INFO kablam!  --> frontend/src/lib.rs:7:1
Sep 10 05:24:38.598 INFO kablam!   |
Sep 10 05:24:38.598 INFO kablam! 7 | #[macro_use]
Sep 10 05:24:38.598 INFO kablam!   | ^^^^^^^^^^^^
Sep 10 05:24:38.598 INFO kablam!   |
Sep 10 05:24:38.598 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 10 05:24:38.598 INFO kablam! 
Sep 10 05:24:38.598 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 10 05:24:38.598 INFO kablam!  --> frontend/src/env.rs:4:5
Sep 10 05:24:38.598 INFO kablam!   |
Sep 10 05:24:38.598 INFO kablam! 4 | use std::rc::Rc;
Sep 10 05:24:38.598 INFO kablam!   |     ^^^^^^^^^^^
Sep 10 05:24:38.598 INFO kablam! 
Sep 10 05:24:38.598 INFO kablam! warning: unused imports: `SymbolFactory`, `Symbol`, `Symbols`
Sep 10 05:24:38.598 INFO kablam!  --> frontend/src/env.rs:6:20
Sep 10 05:24:38.598 INFO kablam!   |
Sep 10 05:24:38.598 INFO kablam! 6 | use util::symbol::{Symbol, SymbolFactory, Symbols};
Sep 10 05:24:38.598 INFO kablam!   |                    ^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^
Sep 10 05:24:38.598 INFO kablam! 
Sep 10 05:24:38.598 INFO kablam! warning: unused import: `util::Unique`
Sep 10 05:24:38.598 INFO kablam!  --> frontend/src/env.rs:7:5
Sep 10 05:24:38.598 INFO kablam!   |
Sep 10 05:24:38.598 INFO kablam! 7 | use util::Unique;
Sep 10 05:24:38.598 INFO kablam!   |     ^^^^^^^^^^^^
Sep 10 05:24:38.598 INFO kablam! 
Sep 10 05:24:38.671 INFO kablam! warning: struct is never constructed: `Compiler`
Sep 10 05:24:38.671 INFO kablam!  --> vm/src/compiler.rs:8:1
Sep 10 05:24:38.671 INFO kablam!   |
Sep 10 05:24:38.671 INFO kablam! 8 | struct Compiler {
Sep 10 05:24:38.671 INFO kablam!   | ^^^^^^^^^^^^^^^
Sep 10 05:24:38.671 INFO kablam!   |
Sep 10 05:24:38.671 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 10 05:24:38.671 INFO kablam! 
Sep 10 05:24:38.671 INFO kablam! warning: method is never used: `new`
Sep 10 05:24:38.671 INFO kablam!   --> vm/src/compiler.rs:14:5
Sep 10 05:24:38.671 INFO kablam!    |
Sep 10 05:24:38.671 INFO kablam! 14 |     pub fn new() -> Self {
Sep 10 05:24:38.671 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^
Sep 10 05:24:38.671 INFO kablam! 
Sep 10 05:24:38.671 INFO kablam! warning: method is never used: `build_op`
Sep 10 05:24:38.671 INFO kablam!   --> vm/src/compiler.rs:21:5
Sep 10 05:24:38.671 INFO kablam!    |
Sep 10 05:24:38.671 INFO kablam! 21 |     fn build_op(&mut self, op: OpCode) {
Sep 10 05:24:38.671 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 05:24:38.671 INFO kablam! 
Sep 10 05:24:38.725 INFO kablam! warning: unused `#[macro_use]` import
Sep 10 05:24:38.725 INFO kablam!  --> frontend/src/lib.rs:7:1
Sep 10 05:24:38.725 INFO kablam!   |
Sep 10 05:24:38.725 INFO kablam! 7 | #[macro_use]
Sep 10 05:24:38.725 INFO kablam!   | ^^^^^^^^^^^^
Sep 10 05:24:38.725 INFO kablam!   |
Sep 10 05:24:38.725 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 10 05:24:38.725 INFO kablam! 
Sep 10 05:24:38.725 INFO kablam! warning: unused import: `std::rc::Rc`
Sep 10 05:24:38.725 INFO kablam!  --> frontend/src/env.rs:4:5
Sep 10 05:24:38.725 INFO kablam!   |
Sep 10 05:24:38.725 INFO kablam! 4 | use std::rc::Rc;
Sep 10 05:24:38.725 INFO kablam!   |     ^^^^^^^^^^^
Sep 10 05:24:38.725 INFO kablam! 
Sep 10 05:24:38.725 INFO kablam! warning: unused imports: `SymbolFactory`, `Symbol`, `Symbols`
Sep 10 05:24:38.725 INFO kablam!  --> frontend/src/env.rs:6:20
Sep 10 05:24:38.725 INFO kablam!   |
Sep 10 05:24:38.725 INFO kablam! 6 | use util::symbol::{Symbol, SymbolFactory, Symbols};
Sep 10 05:24:38.725 INFO kablam!   |                    ^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^
Sep 10 05:24:38.725 INFO kablam! 
Sep 10 05:24:38.725 INFO kablam! warning: unused import: `util::Unique`
Sep 10 05:24:38.725 INFO kablam!  --> frontend/src/env.rs:7:5
Sep 10 05:24:38.725 INFO kablam!   |
Sep 10 05:24:38.725 INFO kablam! 7 | use util::Unique;
Sep 10 05:24:38.725 INFO kablam!   |     ^^^^^^^^^^^^
Sep 10 05:24:38.725 INFO kablam! 
Sep 10 05:24:39.613 INFO kablam! warning: struct is never constructed: `Compiler`
Sep 10 05:24:39.613 INFO kablam!  --> vm/src/compiler.rs:8:1
Sep 10 05:24:39.613 INFO kablam!   |
Sep 10 05:24:39.613 INFO kablam! 8 | struct Compiler {
Sep 10 05:24:39.613 INFO kablam!   | ^^^^^^^^^^^^^^^
Sep 10 05:24:39.622 INFO kablam!   |
Sep 10 05:24:39.622 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 10 05:24:39.622 INFO kablam! 
Sep 10 05:24:39.622 INFO kablam! warning: method is never used: `new`
Sep 10 05:24:39.622 INFO kablam!   --> vm/src/compiler.rs:14:5
Sep 10 05:24:39.622 INFO kablam!    |
Sep 10 05:24:39.622 INFO kablam! 14 |     pub fn new() -> Self {
Sep 10 05:24:39.622 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^
Sep 10 05:24:39.622 INFO kablam! 
Sep 10 05:24:39.622 INFO kablam! warning: method is never used: `build_op`
Sep 10 05:24:39.622 INFO kablam!   --> vm/src/compiler.rs:21:5
Sep 10 05:24:39.622 INFO kablam!    |
Sep 10 05:24:39.622 INFO kablam! 21 |     fn build_op(&mut self, op: OpCode) {
Sep 10 05:24:39.622 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 05:24:39.622 INFO kablam! 
Sep 10 05:24:39.976 INFO kablam! warning: unused variable: `entry`
Sep 10 05:24:39.976 INFO kablam!   --> frontend/src/infer/mod.rs:56:37
Sep 10 05:24:39.976 INFO kablam!    |
Sep 10 05:24:39.976 INFO kablam! 56 |                     if let Some(mut entry) = ctx.look_type(sclass.value) {}
Sep 10 05:24:39.976 INFO kablam!    |                                     ^^^^^ help: consider using `_entry` instead
Sep 10 05:24:39.976 INFO kablam!    |
Sep 10 05:24:39.976 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 10 05:24:39.976 INFO kablam! 
Sep 10 05:24:40.006 INFO kablam! warning: function is never used: `built_in_trim`
Sep 10 05:24:40.006 INFO kablam!   --> interpreter/src/builtins.rs:91:1
Sep 10 05:24:40.006 INFO kablam!    |
Sep 10 05:24:40.006 INFO kablam! 91 | fn built_in_trim(arguments: &[Object]) -> Result<Object, RuntimeError> {
Sep 10 05:24:40.006 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 05:24:40.006 INFO kablam!    |
Sep 10 05:24:40.006 INFO kablam!    = note: #[warn(dead_code)] on by default
Sep 10 05:24:40.006 INFO kablam! 
Sep 10 05:24:40.052 INFO kablam! warning: function is never used: `built_in_trim`
Sep 10 05:24:40.052 INFO kablam!   --> interpreter/src/builtins.rs:91:1
Sep 10 05:24:40.052 INFO kablam!    |
Sep 10 05:24:40.052 INFO kablam! 91 | fn built_in_trim(arguments: &[Object]) -> Result<Object, RuntimeError> {
Sep 10 05:24:40.052 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 05:24:40.052 INFO kablam!    |
Sep 10 05:24:40.052 INFO kablam!    = note: #[warn(dead_code)] on by default
Sep 10 05:24:40.052 INFO kablam! 
Sep 10 05:24:40.198 INFO kablam! warning: unused variable: `entry`
Sep 10 05:24:40.198 INFO kablam!   --> frontend/src/infer/mod.rs:56:37
Sep 10 05:24:40.198 INFO kablam!    |
Sep 10 05:24:40.198 INFO kablam! 56 |                     if let Some(mut entry) = ctx.look_type(sclass.value) {}
Sep 10 05:24:40.198 INFO kablam!    |                                     ^^^^^ help: consider using `_entry` instead
Sep 10 05:24:40.198 INFO kablam!    |
Sep 10 05:24:40.198 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 10 05:24:40.198 INFO kablam! 
Sep 10 05:24:40.586 INFO kablam!     Checking tox v0.2.0 (file:///source/tox)
Sep 10 05:24:41.182 INFO kablam! warning: unused variable: `ast`
Sep 10 05:24:41.182 INFO kablam!   --> tox/src/main.rs:64:13
Sep 10 05:24:41.182 INFO kablam!    |
Sep 10 05:24:41.182 INFO kablam! 64 |         let ast = match Parser::new(tokens, reporter.clone(), &mut symbols).parse() {
Sep 10 05:24:41.182 INFO kablam!    |             ^^^ help: consider using `_ast` instead
Sep 10 05:24:41.182 INFO kablam!    |
Sep 10 05:24:41.182 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 10 05:24:41.182 INFO kablam! 
Sep 10 05:24:41.182 INFO kablam! warning: unused variable: `penv`
Sep 10 05:24:41.182 INFO kablam!    --> tox/src/main.rs:104:55
Sep 10 05:24:41.182 INFO kablam!     |
Sep 10 05:24:41.182 INFO kablam! 104 | pub fn run(path: String, ptokens: bool, pprint: bool, penv: bool, past: bool) {
Sep 10 05:24:41.182 INFO kablam!     |                                                       ^^^^ help: consider using `_penv` instead
Sep 10 05:24:41.182 INFO kablam! 
Sep 10 05:24:41.259 INFO kablam! warning: unused variable: `ast`
Sep 10 05:24:41.260 INFO kablam!   --> tox/src/main.rs:64:13
Sep 10 05:24:41.260 INFO kablam!    |
Sep 10 05:24:41.260 INFO kablam! 64 |         let ast = match Parser::new(tokens, reporter.clone(), &mut symbols).parse() {
Sep 10 05:24:41.260 INFO kablam!    |             ^^^ help: consider using `_ast` instead
Sep 10 05:24:41.260 INFO kablam!    |
Sep 10 05:24:41.260 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 10 05:24:41.260 INFO kablam! 
Sep 10 05:24:41.261 INFO kablam! warning: unused variable: `penv`
Sep 10 05:24:41.261 INFO kablam!    --> tox/src/main.rs:104:55
Sep 10 05:24:41.261 INFO kablam!     |
Sep 10 05:24:41.261 INFO kablam! 104 | pub fn run(path: String, ptokens: bool, pprint: bool, penv: bool, past: bool) {
Sep 10 05:24:41.261 INFO kablam!     |                                                       ^^^^ help: consider using `_penv` instead
Sep 10 05:24:41.261 INFO kablam! 
Sep 10 05:24:41.315 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 9.92s
Sep 10 05:24:41.336 INFO kablam! su: No module specific data is present
Sep 10 05:24:42.152 INFO running `"docker" "rm" "-f" "2bd2e4922566d6e18cd76112622caebc9d5d9c07ae15f51362a3d2ee2561d945"`
Sep 10 05:24:42.267 INFO blam! 2bd2e4922566d6e18cd76112622caebc9d5d9c07ae15f51362a3d2ee2561d945