Dec 12 20:19:33.792 INFO testing yiransheng/basic_rs against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 12 20:19:33.792 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 12 20:19:34.264 INFO [stdout] 61f4f8769cf6e2581e29a8a8930ce50e9f6c6b160732afdf1c38f3febf14aa3b
Dec 12 20:19:34.268 INFO running `"docker" "start" "-a" "61f4f8769cf6e2581e29a8a8930ce50e9f6c6b160732afdf1c38f3febf14aa3b"`
Dec 12 20:19:35.859 INFO [stderr] usermod: no changes
Dec 12 20:19:35.935 INFO [stderr] warning: unused manifest key: profile.bench.target-cpu
Dec 12 20:19:36.111 INFO [stderr]    Compiling proc-macro-hack-impl v0.4.1
Dec 12 20:19:36.115 INFO [stderr]    Compiling unindent v0.1.3
Dec 12 20:19:36.115 INFO [stderr]    Compiling either v1.5.0
Dec 12 20:19:36.115 INFO [stderr]    Compiling matches v0.1.8
Dec 12 20:19:36.123 INFO [stderr]    Compiling rand_isaac v0.1.1
Dec 12 20:19:36.123 INFO [stderr]    Compiling unreachable v0.1.1
Dec 12 20:19:36.123 INFO [stderr]    Compiling rustc-hash v1.0.1
Dec 12 20:19:36.123 INFO [stderr]    Compiling syn v0.15.22
Dec 12 20:19:36.579 INFO [stderr]    Compiling nanbox v0.2.0
Dec 12 20:19:38.403 INFO [stderr]    Compiling rand v0.6.1
Dec 12 20:19:38.571 INFO [stderr]    Compiling proc-macro-hack v0.4.1
Dec 12 20:19:48.769 INFO [stderr]    Compiling structopt-derive v0.2.13
Dec 12 20:19:48.769 INFO [stderr]    Compiling indoc-impl v0.2.8
Dec 12 20:19:48.769 INFO [stderr]    Compiling num-derive v0.2.3
Dec 12 20:19:50.677 INFO [stderr]    Compiling indoc v0.2.8
Dec 12 20:19:53.759 INFO [stderr]    Compiling structopt v0.2.13
Dec 12 20:19:56.631 INFO [stderr]    Compiling basic_rs v0.1.0 (/source)
Dec 12 20:19:57.097 INFO [stderr] warning: unused import: `std::collections::VecDeque`
Dec 12 20:19:57.097 INFO [stderr]  --> src/vm/chunk.rs:1:5
Dec 12 20:19:57.097 INFO [stderr]   |
Dec 12 20:19:57.097 INFO [stderr] 1 | use std::collections::VecDeque;
Dec 12 20:19:57.097 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:19:57.097 INFO [stderr]   |
Dec 12 20:19:57.097 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 20:19:57.097 INFO [stderr] 
Dec 12 20:19:58.983 INFO [stderr] warning: field is never used: `id`
Dec 12 20:19:58.983 INFO [stderr]  --> src/compiler/anon_var.rs:4:5
Dec 12 20:19:58.983 INFO [stderr]   |
Dec 12 20:19:58.983 INFO [stderr] 4 |     id: u16,
Dec 12 20:19:58.983 INFO [stderr]   |     ^^^^^^^
Dec 12 20:19:58.983 INFO [stderr]   |
Dec 12 20:19:58.983 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 20:19:58.983 INFO [stderr] 
Dec 12 20:19:58.983 INFO [stderr] warning: method is never used: `next_anonymous`
Dec 12 20:19:58.983 INFO [stderr]   --> src/compiler/anon_var.rs:11:5
Dec 12 20:19:58.983 INFO [stderr]    |
Dec 12 20:19:58.983 INFO [stderr] 11 |     pub fn next_anonymous(&mut self) -> Variable {
Dec 12 20:19:58.983 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:19:58.983 INFO [stderr] 
Dec 12 20:19:58.983 INFO [stderr] warning: field is never used: `free`
Dec 12 20:19:58.983 INFO [stderr]   --> src/compiler/compiler.rs:44:5
Dec 12 20:19:58.983 INFO [stderr]    |
Dec 12 20:19:58.983 INFO [stderr] 44 |     free: FxHashSet<Variable>,
Dec 12 20:19:58.983 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:19:58.983 INFO [stderr] 
Dec 12 20:19:58.983 INFO [stderr] warning: field is never used: `var_gen`
Dec 12 20:19:58.983 INFO [stderr]   --> src/compiler/compiler.rs:46:5
Dec 12 20:19:58.983 INFO [stderr]    |
Dec 12 20:19:58.983 INFO [stderr] 46 |     var_gen: AnonVarGen,
Dec 12 20:19:58.983 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 12 20:19:58.983 INFO [stderr] 
Dec 12 20:19:58.983 INFO [stderr] warning: method is never used: `get_local`
Dec 12 20:19:58.983 INFO [stderr]   --> src/compiler/compiler.rs:49:5
Dec 12 20:19:58.983 INFO [stderr]    |
Dec 12 20:19:58.983 INFO [stderr] 49 |     fn get_local(&mut self) -> Variable {
Dec 12 20:19:58.983 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:19:58.983 INFO [stderr] 
Dec 12 20:19:58.983 INFO [stderr] warning: method is never used: `reclaim_local`
Dec 12 20:19:58.983 INFO [stderr]   --> src/compiler/compiler.rs:73:5
Dec 12 20:19:58.983 INFO [stderr]    |
Dec 12 20:19:58.983 INFO [stderr] 73 |     fn reclaim_local(&mut self, var: Variable) {
Dec 12 20:19:58.983 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:19:58.983 INFO [stderr] 
Dec 12 20:19:58.983 INFO [stderr] warning: function is never used: `print_source_error`
Dec 12 20:19:58.983 INFO [stderr]   --> src/error_print.rs:75:1
Dec 12 20:19:58.983 INFO [stderr]    |
Dec 12 20:19:58.983 INFO [stderr] 75 | pub fn print_source_error<E: Error>(err: SourceMapped<E>, source: &str) {
Dec 12 20:19:58.983 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:19:58.983 INFO [stderr] 
Dec 12 20:20:04.635 INFO [stderr] warning: unused import: `std::collections::VecDeque`
Dec 12 20:20:04.635 INFO [stderr]  --> src/vm/chunk.rs:1:5
Dec 12 20:20:04.635 INFO [stderr]   |
Dec 12 20:20:04.635 INFO [stderr] 1 | use std::collections::VecDeque;
Dec 12 20:20:04.635 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:20:04.635 INFO [stderr]   |
Dec 12 20:20:04.635 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 20:20:04.635 INFO [stderr] 
Dec 12 20:20:06.579 INFO [stderr] warning: function is never used: `u16_to_bytes`
Dec 12 20:20:06.579 INFO [stderr]   --> src/ast/variable.rs:41:1
Dec 12 20:20:06.579 INFO [stderr]    |
Dec 12 20:20:06.579 INFO [stderr] 41 | fn u16_to_bytes(b: u16) -> [u8; 2] {
Dec 12 20:20:06.579 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:20:06.579 INFO [stderr]    |
Dec 12 20:20:06.579 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 20:20:06.579 INFO [stderr] 
Dec 12 20:20:06.579 INFO [stderr] warning: method is never used: `from_u16`
Dec 12 20:20:06.579 INFO [stderr]   --> src/ast/variable.rs:48:5
Dec 12 20:20:06.579 INFO [stderr]    |
Dec 12 20:20:06.579 INFO [stderr] 48 |     pub fn from_u16(b: u16) -> Result<Self, NameError> {
Dec 12 20:20:06.579 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:20:06.579 INFO [stderr] 
Dec 12 20:20:06.579 INFO [stderr] warning: method is never used: `from_u16_unchecked`
Dec 12 20:20:06.579 INFO [stderr]   --> src/ast/variable.rs:78:5
Dec 12 20:20:06.579 INFO [stderr]    |
Dec 12 20:20:06.579 INFO [stderr] 78 |     pub fn from_u16_unchecked(b: u16) -> Self {
Dec 12 20:20:06.579 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:20:06.579 INFO [stderr] 
Dec 12 20:20:06.579 INFO [stderr] warning: field is never used: `id`
Dec 12 20:20:06.579 INFO [stderr]  --> src/compiler/anon_var.rs:4:5
Dec 12 20:20:06.579 INFO [stderr]   |
Dec 12 20:20:06.579 INFO [stderr] 4 |     id: u16,
Dec 12 20:20:06.579 INFO [stderr]   |     ^^^^^^^
Dec 12 20:20:06.579 INFO [stderr] 
Dec 12 20:20:06.579 INFO [stderr] warning: method is never used: `next_anonymous`
Dec 12 20:20:06.579 INFO [stderr]   --> src/compiler/anon_var.rs:11:5
Dec 12 20:20:06.579 INFO [stderr]    |
Dec 12 20:20:06.579 INFO [stderr] 11 |     pub fn next_anonymous(&mut self) -> Variable {
Dec 12 20:20:06.579 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:20:06.579 INFO [stderr] 
Dec 12 20:20:06.580 INFO [stderr] warning: field is never used: `free`
Dec 12 20:20:06.580 INFO [stderr]   --> src/compiler/compiler.rs:44:5
Dec 12 20:20:06.580 INFO [stderr]    |
Dec 12 20:20:06.580 INFO [stderr] 44 |     free: FxHashSet<Variable>,
Dec 12 20:20:06.580 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:20:06.580 INFO [stderr] 
Dec 12 20:20:06.580 INFO [stderr] warning: field is never used: `var_gen`
Dec 12 20:20:06.580 INFO [stderr]   --> src/compiler/compiler.rs:46:5
Dec 12 20:20:06.580 INFO [stderr]    |
Dec 12 20:20:06.580 INFO [stderr] 46 |     var_gen: AnonVarGen,
Dec 12 20:20:06.580 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 12 20:20:06.580 INFO [stderr] 
Dec 12 20:20:06.580 INFO [stderr] warning: method is never used: `get_local`
Dec 12 20:20:06.580 INFO [stderr]   --> src/compiler/compiler.rs:49:5
Dec 12 20:20:06.580 INFO [stderr]    |
Dec 12 20:20:06.580 INFO [stderr] 49 |     fn get_local(&mut self) -> Variable {
Dec 12 20:20:06.580 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:20:06.580 INFO [stderr] 
Dec 12 20:20:06.580 INFO [stderr] warning: method is never used: `reclaim_local`
Dec 12 20:20:06.580 INFO [stderr]   --> src/compiler/compiler.rs:73:5
Dec 12 20:20:06.580 INFO [stderr]    |
Dec 12 20:20:06.580 INFO [stderr] 73 |     fn reclaim_local(&mut self, var: Variable) {
Dec 12 20:20:06.580 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:20:06.580 INFO [stderr] 
Dec 12 20:20:06.581 INFO [stderr] warning: method is never used: `reset`
Dec 12 20:20:06.581 INFO [stderr]    --> src/vm/chunk.rs:141:5
Dec 12 20:20:06.581 INFO [stderr]     |
Dec 12 20:20:06.581 INFO [stderr] 141 |     pub fn reset(&mut self) {
Dec 12 20:20:06.581 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:20:06.581 INFO [stderr] 
Dec 12 20:20:06.581 INFO [stderr] warning: method is never used: `reset`
Dec 12 20:20:06.581 INFO [stderr]   --> src/vm/data.rs:24:5
Dec 12 20:20:06.581 INFO [stderr]    |
Dec 12 20:20:06.581 INFO [stderr] 24 |     pub fn reset(&mut self) {
Dec 12 20:20:06.581 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:20:06.581 INFO [stderr] 
Dec 12 20:20:06.581 INFO [stderr] warning: method is never used: `reset`
Dec 12 20:20:06.581 INFO [stderr]    --> src/vm/mod.rs:170:5
Dec 12 20:20:06.581 INFO [stderr]     |
Dec 12 20:20:06.581 INFO [stderr] 170 |     pub fn reset(&mut self) {
Dec 12 20:20:06.581 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:20:06.581 INFO [stderr] 
Dec 12 20:20:12.952 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.05s
Dec 12 20:20:12.963 INFO [stderr] su: No module specific data is present
Dec 12 20:20:14.020 INFO running `"docker" "inspect" "61f4f8769cf6e2581e29a8a8930ce50e9f6c6b160732afdf1c38f3febf14aa3b"`
Dec 12 20:20:14.277 INFO running `"docker" "rm" "-f" "61f4f8769cf6e2581e29a8a8930ce50e9f6c6b160732afdf1c38f3febf14aa3b"`
Dec 12 20:20:14.671 INFO [stdout] 61f4f8769cf6e2581e29a8a8930ce50e9f6c6b160732afdf1c38f3febf14aa3b
Dec 12 20:20:14.677 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 12 20:20:15.265 INFO [stdout] a45dc5e7def023ca3a1e6c3b1bbb8900d055f5b7a1ed5505ac59c3a3d19e203b
Dec 12 20:20:15.267 INFO running `"docker" "start" "-a" "a45dc5e7def023ca3a1e6c3b1bbb8900d055f5b7a1ed5505ac59c3a3d19e203b"`
Dec 12 20:20:16.651 INFO [stderr] usermod: no changes
Dec 12 20:20:16.687 INFO [stderr] warning: unused manifest key: profile.bench.target-cpu
Dec 12 20:20:16.924 INFO [stderr]    Compiling version_check v0.1.5
Dec 12 20:20:16.924 INFO [stderr]    Compiling num-integer v0.1.39
Dec 12 20:20:16.924 INFO [stderr]    Compiling serde v1.0.81
Dec 12 20:20:16.924 INFO [stderr]    Compiling regex v1.1.0
Dec 12 20:20:16.924 INFO [stderr]    Compiling ucd-util v0.1.3
Dec 12 20:20:16.947 INFO [stderr]    Compiling pest v1.0.6
Dec 12 20:20:16.967 INFO [stderr]    Compiling utf8-ranges v1.0.2
Dec 12 20:20:16.967 INFO [stderr]    Compiling cast v0.2.2
Dec 12 20:20:21.599 INFO [stderr]    Compiling thread-scoped v1.0.2
Dec 12 20:20:21.599 INFO [stderr]    Compiling same-file v1.0.4
Dec 12 20:20:21.656 INFO [stderr]    Compiling log v0.4.6
Dec 12 20:20:21.657 INFO [stderr]    Compiling itertools v0.7.11
Dec 12 20:20:21.658 INFO [stderr]    Compiling regex-syntax v0.6.4
Dec 12 20:20:21.942 INFO [stderr]    Compiling memchr v2.1.1
Dec 12 20:20:22.725 INFO [stderr]    Compiling rand v0.4.3
Dec 12 20:20:24.057 INFO [stderr]    Compiling itertools-num v0.1.3
Dec 12 20:20:25.013 INFO [stderr]    Compiling backtrace-sys v0.1.24
Dec 12 20:20:25.371 INFO [stderr]    Compiling pest_derive v1.0.8
Dec 12 20:20:26.651 INFO [stderr]    Compiling walkdir v2.2.7
Dec 12 20:20:27.061 INFO [stderr]    Compiling backtrace v0.3.9
Dec 12 20:20:34.736 INFO [stderr]    Compiling synstructure v0.10.1
Dec 12 20:20:34.856 INFO [stderr]    Compiling serde_derive v1.0.81
Dec 12 20:20:40.636 INFO [stderr]    Compiling chrono v0.4.6
Dec 12 20:20:56.220 INFO [stderr]    Compiling criterion-plot v0.2.5
Dec 12 20:20:56.494 INFO [stderr]    Compiling criterion-stats v0.2.5
Dec 12 20:20:56.615 INFO [stderr]    Compiling aho-corasick v0.6.9
Dec 12 20:20:56.855 INFO [stderr]    Compiling csv-core v0.1.4
Dec 12 20:21:09.015 INFO [stderr]    Compiling simplelog v0.5.3
Dec 12 20:21:09.015 INFO [stderr]    Compiling failure_derive v0.1.3
Dec 12 20:21:17.311 INFO [stderr]    Compiling failure v0.1.3
Dec 12 20:21:34.324 INFO [stderr]    Compiling serde_json v1.0.33
Dec 12 20:21:34.540 INFO [stderr]    Compiling csv v1.0.2
Dec 12 20:21:42.907 INFO [stderr]    Compiling handlebars v0.32.4
Dec 12 20:21:53.075 INFO [stderr]    Compiling criterion v0.2.5
Dec 12 20:22:05.331 INFO [stderr]    Compiling basic_rs v0.1.0 (/source)
Dec 12 20:22:06.275 INFO [stderr] warning: unused import: `std::collections::VecDeque`
Dec 12 20:22:06.275 INFO [stderr]  --> src/vm/chunk.rs:1:5
Dec 12 20:22:06.275 INFO [stderr]   |
Dec 12 20:22:06.275 INFO [stderr] 1 | use std::collections::VecDeque;
Dec 12 20:22:06.275 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:06.275 INFO [stderr]   |
Dec 12 20:22:06.275 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 20:22:06.275 INFO [stderr] 
Dec 12 20:22:06.339 INFO [stderr] warning: unused import: `std::collections::VecDeque`
Dec 12 20:22:06.339 INFO [stderr]  --> src/vm/chunk.rs:1:5
Dec 12 20:22:06.339 INFO [stderr]   |
Dec 12 20:22:06.339 INFO [stderr] 1 | use std::collections::VecDeque;
Dec 12 20:22:06.339 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:06.339 INFO [stderr]   |
Dec 12 20:22:06.339 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 20:22:06.339 INFO [stderr] 
Dec 12 20:22:09.595 INFO [stderr] warning: field is never used: `id`
Dec 12 20:22:09.595 INFO [stderr]  --> src/compiler/anon_var.rs:4:5
Dec 12 20:22:09.595 INFO [stderr]   |
Dec 12 20:22:09.595 INFO [stderr] 4 |     id: u16,
Dec 12 20:22:09.595 INFO [stderr]   |     ^^^^^^^
Dec 12 20:22:09.596 INFO [stderr]   |
Dec 12 20:22:09.596 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 20:22:09.596 INFO [stderr] 
Dec 12 20:22:09.596 INFO [stderr] warning: method is never used: `next_anonymous`
Dec 12 20:22:09.596 INFO [stderr]   --> src/compiler/anon_var.rs:11:5
Dec 12 20:22:09.596 INFO [stderr]    |
Dec 12 20:22:09.596 INFO [stderr] 11 |     pub fn next_anonymous(&mut self) -> Variable {
Dec 12 20:22:09.596 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.596 INFO [stderr] 
Dec 12 20:22:09.596 INFO [stderr] warning: field is never used: `free`
Dec 12 20:22:09.597 INFO [stderr]   --> src/compiler/compiler.rs:44:5
Dec 12 20:22:09.597 INFO [stderr]    |
Dec 12 20:22:09.597 INFO [stderr] 44 |     free: FxHashSet<Variable>,
Dec 12 20:22:09.597 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.597 INFO [stderr] 
Dec 12 20:22:09.597 INFO [stderr] warning: field is never used: `var_gen`
Dec 12 20:22:09.597 INFO [stderr]   --> src/compiler/compiler.rs:46:5
Dec 12 20:22:09.597 INFO [stderr]    |
Dec 12 20:22:09.597 INFO [stderr] 46 |     var_gen: AnonVarGen,
Dec 12 20:22:09.597 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.597 INFO [stderr] 
Dec 12 20:22:09.597 INFO [stderr] warning: method is never used: `get_local`
Dec 12 20:22:09.597 INFO [stderr]   --> src/compiler/compiler.rs:49:5
Dec 12 20:22:09.597 INFO [stderr]    |
Dec 12 20:22:09.597 INFO [stderr] 49 |     fn get_local(&mut self) -> Variable {
Dec 12 20:22:09.597 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.597 INFO [stderr] 
Dec 12 20:22:09.597 INFO [stderr] warning: method is never used: `reclaim_local`
Dec 12 20:22:09.597 INFO [stderr]   --> src/compiler/compiler.rs:73:5
Dec 12 20:22:09.597 INFO [stderr]    |
Dec 12 20:22:09.597 INFO [stderr] 73 |     fn reclaim_local(&mut self, var: Variable) {
Dec 12 20:22:09.597 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.598 INFO [stderr] 
Dec 12 20:22:09.603 INFO [stderr] warning: function is never used: `print_source_error`
Dec 12 20:22:09.603 INFO [stderr]   --> src/error_print.rs:75:1
Dec 12 20:22:09.603 INFO [stderr]    |
Dec 12 20:22:09.603 INFO [stderr] 75 | pub fn print_source_error<E: Error>(err: SourceMapped<E>, source: &str) {
Dec 12 20:22:09.603 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.607 INFO [stderr] 
Dec 12 20:22:09.979 INFO [stderr] warning: function is never used: `u16_to_bytes`
Dec 12 20:22:09.979 INFO [stderr]   --> src/ast/variable.rs:41:1
Dec 12 20:22:09.979 INFO [stderr]    |
Dec 12 20:22:09.979 INFO [stderr] 41 | fn u16_to_bytes(b: u16) -> [u8; 2] {
Dec 12 20:22:09.979 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.979 INFO [stderr]    |
Dec 12 20:22:09.979 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 20:22:09.979 INFO [stderr] 
Dec 12 20:22:09.979 INFO [stderr] warning: method is never used: `from_u16`
Dec 12 20:22:09.979 INFO [stderr]   --> src/ast/variable.rs:48:5
Dec 12 20:22:09.979 INFO [stderr]    |
Dec 12 20:22:09.979 INFO [stderr] 48 |     pub fn from_u16(b: u16) -> Result<Self, NameError> {
Dec 12 20:22:09.979 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.979 INFO [stderr] 
Dec 12 20:22:09.979 INFO [stderr] warning: method is never used: `from_u16_unchecked`
Dec 12 20:22:09.979 INFO [stderr]   --> src/ast/variable.rs:78:5
Dec 12 20:22:09.979 INFO [stderr]    |
Dec 12 20:22:09.979 INFO [stderr] 78 |     pub fn from_u16_unchecked(b: u16) -> Self {
Dec 12 20:22:09.979 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.979 INFO [stderr] 
Dec 12 20:22:09.979 INFO [stderr] warning: field is never used: `id`
Dec 12 20:22:09.979 INFO [stderr]  --> src/compiler/anon_var.rs:4:5
Dec 12 20:22:09.979 INFO [stderr]   |
Dec 12 20:22:09.979 INFO [stderr] 4 |     id: u16,
Dec 12 20:22:09.979 INFO [stderr]   |     ^^^^^^^
Dec 12 20:22:09.979 INFO [stderr] 
Dec 12 20:22:09.979 INFO [stderr] warning: method is never used: `next_anonymous`
Dec 12 20:22:09.979 INFO [stderr]   --> src/compiler/anon_var.rs:11:5
Dec 12 20:22:09.979 INFO [stderr]    |
Dec 12 20:22:09.979 INFO [stderr] 11 |     pub fn next_anonymous(&mut self) -> Variable {
Dec 12 20:22:09.979 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.979 INFO [stderr] 
Dec 12 20:22:09.979 INFO [stderr] warning: field is never used: `free`
Dec 12 20:22:09.979 INFO [stderr]   --> src/compiler/compiler.rs:44:5
Dec 12 20:22:09.979 INFO [stderr]    |
Dec 12 20:22:09.979 INFO [stderr] 44 |     free: FxHashSet<Variable>,
Dec 12 20:22:09.979 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.979 INFO [stderr] 
Dec 12 20:22:09.979 INFO [stderr] warning: field is never used: `var_gen`
Dec 12 20:22:09.979 INFO [stderr]   --> src/compiler/compiler.rs:46:5
Dec 12 20:22:09.979 INFO [stderr]    |
Dec 12 20:22:09.979 INFO [stderr] 46 |     var_gen: AnonVarGen,
Dec 12 20:22:09.979 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.979 INFO [stderr] 
Dec 12 20:22:09.979 INFO [stderr] warning: method is never used: `get_local`
Dec 12 20:22:09.979 INFO [stderr]   --> src/compiler/compiler.rs:49:5
Dec 12 20:22:09.979 INFO [stderr]    |
Dec 12 20:22:09.979 INFO [stderr] 49 |     fn get_local(&mut self) -> Variable {
Dec 12 20:22:09.979 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.979 INFO [stderr] 
Dec 12 20:22:09.980 INFO [stderr] warning: method is never used: `reclaim_local`
Dec 12 20:22:09.980 INFO [stderr]   --> src/compiler/compiler.rs:73:5
Dec 12 20:22:09.980 INFO [stderr]    |
Dec 12 20:22:09.980 INFO [stderr] 73 |     fn reclaim_local(&mut self, var: Variable) {
Dec 12 20:22:09.980 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.980 INFO [stderr] 
Dec 12 20:22:09.980 INFO [stderr] warning: method is never used: `reset`
Dec 12 20:22:09.980 INFO [stderr]    --> src/vm/chunk.rs:141:5
Dec 12 20:22:09.980 INFO [stderr]     |
Dec 12 20:22:09.980 INFO [stderr] 141 |     pub fn reset(&mut self) {
Dec 12 20:22:09.980 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.980 INFO [stderr] 
Dec 12 20:22:09.980 INFO [stderr] warning: method is never used: `reset`
Dec 12 20:22:09.980 INFO [stderr]   --> src/vm/data.rs:24:5
Dec 12 20:22:09.980 INFO [stderr]    |
Dec 12 20:22:09.980 INFO [stderr] 24 |     pub fn reset(&mut self) {
Dec 12 20:22:09.980 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.980 INFO [stderr] 
Dec 12 20:22:09.980 INFO [stderr] warning: method is never used: `reset`
Dec 12 20:22:09.980 INFO [stderr]    --> src/vm/mod.rs:170:5
Dec 12 20:22:09.980 INFO [stderr]     |
Dec 12 20:22:09.980 INFO [stderr] 170 |     pub fn reset(&mut self) {
Dec 12 20:22:09.980 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 20:22:09.980 INFO [stderr] 
Dec 12 20:22:22.919 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 06s
Dec 12 20:22:22.928 INFO [stderr] su: No module specific data is present
Dec 12 20:22:24.548 INFO running `"docker" "inspect" "a45dc5e7def023ca3a1e6c3b1bbb8900d055f5b7a1ed5505ac59c3a3d19e203b"`
Dec 12 20:22:24.891 INFO running `"docker" "rm" "-f" "a45dc5e7def023ca3a1e6c3b1bbb8900d055f5b7a1ed5505ac59c3a3d19e203b"`
Dec 12 20:22:25.267 INFO [stdout] a45dc5e7def023ca3a1e6c3b1bbb8900d055f5b7a1ed5505ac59c3a3d19e203b
Dec 12 20:22:25.271 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --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 12 20:22:25.994 INFO [stdout] f8c872b946a581b3a96f395986304ec79da89b2cec005b54a1e899268732747f
Dec 12 20:22:25.999 INFO running `"docker" "start" "-a" "f8c872b946a581b3a96f395986304ec79da89b2cec005b54a1e899268732747f"`
Dec 12 20:22:27.654 INFO [stderr] usermod: no changes
Dec 12 20:22:27.712 INFO [stderr] warning: unused manifest key: profile.bench.target-cpu
Dec 12 20:22:27.943 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
Dec 12 20:22:27.959 INFO [stderr]      Running /target/debug/deps/basic_rs-91966237ca9d052c
Dec 12 20:22:27.965 INFO [stdout] 
Dec 12 20:22:27.965 INFO [stdout] running 6 tests
Dec 12 20:22:27.965 INFO [stdout] test scanner::test_keyword::test_match_keywords ... ok
Dec 12 20:22:27.965 INFO [stdout] test scanner::number::tests::test_match_num_ok ... ok
Dec 12 20:22:27.966 INFO [stdout] test scanner::number::tests::test_match_num_err ... ok
Dec 12 20:22:27.968 INFO [stdout] test parser::tests::test_parse_simple ... ok
Dec 12 20:22:27.968 INFO [stdout] test scanner::test_scanner::test_program ... ok
Dec 12 20:22:27.974 INFO [stdout] test compiler::tests::test_simple ... ok
Dec 12 20:22:27.974 INFO [stderr]      Running /target/debug/deps/basic_rs-1204c850445eeb2b
Dec 12 20:22:27.974 INFO [stdout] 
Dec 12 20:22:27.974 INFO [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 12 20:22:27.974 INFO [stdout] 
Dec 12 20:22:27.974 INFO [stdout] 
Dec 12 20:22:27.974 INFO [stdout] running 9 tests
Dec 12 20:22:27.975 INFO [stdout] test tests::test_parse_error ... ok
Dec 12 20:22:27.975 INFO [stdout] test tests::test_parse_source_loc ... ok
Dec 12 20:22:27.975 INFO [stdout] test scanner::test_scanner::test_program ... ok
Dec 12 20:22:27.979 INFO [stdout] test scanner::test_keyword::test_match_keywords ... ok
Dec 12 20:22:27.979 INFO [stdout] test scanner::number::tests::test_match_num_ok ... ok
Dec 12 20:22:27.979 INFO [stdout] test scanner::number::tests::test_match_num_err ... ok
Dec 12 20:22:27.987 INFO [stdout] test parser::tests::test_parse_simple ... ok
Dec 12 20:22:27.999 INFO [stdout] test compiler::tests::test_simple ... ok
Dec 12 20:22:28.306 INFO [stdout] test tests::test_sample_programs ... ok
Dec 12 20:22:28.306 INFO [stdout] 
Dec 12 20:22:28.306 INFO [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 12 20:22:28.306 INFO [stdout] 
Dec 12 20:22:28.311 INFO [stderr]    Doc-tests basic_rs
Dec 12 20:22:28.755 INFO [stdout] 
Dec 12 20:22:28.755 INFO [stdout] running 0 tests
Dec 12 20:22:28.755 INFO [stdout] 
Dec 12 20:22:28.755 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 12 20:22:28.755 INFO [stdout] 
Dec 12 20:22:28.767 INFO [stderr] su: No module specific data is present
Dec 12 20:22:29.926 INFO running `"docker" "inspect" "f8c872b946a581b3a96f395986304ec79da89b2cec005b54a1e899268732747f"`
Dec 12 20:22:30.295 INFO running `"docker" "rm" "-f" "f8c872b946a581b3a96f395986304ec79da89b2cec005b54a1e899268732747f"`
Dec 12 20:22:30.591 INFO [stdout] f8c872b946a581b3a96f395986304ec79da89b2cec005b54a1e899268732747f