[INFO] updating cached repository yiransheng/basic_rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yiransheng/basic_rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yiransheng/basic_rs" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/yiransheng/basic_rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/yiransheng/basic_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yiransheng/basic_rs" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/yiransheng/basic_rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/yiransheng/basic_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a9f05037e9c2d4948589940fd35bdbeaaced1ee6
[INFO] sha for GitHub repo yiransheng/basic_rs: a9f05037e9c2d4948589940fd35bdbeaaced1ee6
[INFO] validating manifest of yiransheng/basic_rs on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of yiransheng/basic_rs on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing yiransheng/basic_rs
[INFO] finished frobbing yiransheng/basic_rs
[INFO] frobbed toml for yiransheng/basic_rs written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/yiransheng/basic_rs/Cargo.toml
[INFO] started frobbing yiransheng/basic_rs
[INFO] finished frobbing yiransheng/basic_rs
[INFO] frobbed toml for yiransheng/basic_rs written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/yiransheng/basic_rs/Cargo.toml
[INFO] crate yiransheng/basic_rs has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing yiransheng/basic_rs against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/yiransheng/basic_rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] a40cfce2cc405210442d6068b428acd9239765ec4639adc27acc3f30c8347697
[INFO] running `"docker" "start" "-a" "a40cfce2cc405210442d6068b428acd9239765ec4639adc27acc3f30c8347697"`
[INFO] [stderr] warning: unused manifest key: profile.bench.target-cpu
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.1
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]    Compiling unindent v0.1.3
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling heck v0.3.0
[INFO] [stderr]    Compiling rustc-hash v1.0.1
[INFO] [stderr]    Compiling nanbox v0.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.4.1
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]    Compiling structopt-derive v0.2.13
[INFO] [stderr]    Compiling indoc-impl v0.2.8
[INFO] [stderr]    Compiling indoc v0.2.8
[INFO] [stderr]    Compiling structopt v0.2.13
[INFO] [stderr]    Compiling basic_rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::collections::VecDeque`
[INFO] [stderr]  --> src/vm/chunk.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::VecDeque;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]  --> src/compiler/anon_var.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     id: u16,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_anonymous`
[INFO] [stderr]   --> src/compiler/anon_var.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn next_anonymous(&mut self) -> Variable {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `free`
[INFO] [stderr]   --> src/compiler/compiler.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     free: FxHashSet<Variable>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `var_gen`
[INFO] [stderr]   --> src/compiler/compiler.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     var_gen: AnonVarGen,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_local`
[INFO] [stderr]   --> src/compiler/compiler.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn get_local(&mut self) -> Variable {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reclaim_local`
[INFO] [stderr]   --> src/compiler/compiler.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn reclaim_local(&mut self, var: Variable) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_source_error`
[INFO] [stderr]   --> src/error_print.rs:75:1
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn print_source_error<E: Error>(err: SourceMapped<E>, source: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::VecDeque`
[INFO] [stderr]  --> src/vm/chunk.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::VecDeque;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `u16_to_bytes`
[INFO] [stderr]   --> src/ast/variable.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn u16_to_bytes(b: u16) -> [u8; 2] {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_u16`
[INFO] [stderr]   --> src/ast/variable.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn from_u16(b: u16) -> Result<Self, NameError> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_u16_unchecked`
[INFO] [stderr]   --> src/ast/variable.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub fn from_u16_unchecked(b: u16) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]  --> src/compiler/anon_var.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     id: u16,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_anonymous`
[INFO] [stderr]   --> src/compiler/anon_var.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn next_anonymous(&mut self) -> Variable {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `free`
[INFO] [stderr]   --> src/compiler/compiler.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     free: FxHashSet<Variable>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `var_gen`
[INFO] [stderr]   --> src/compiler/compiler.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     var_gen: AnonVarGen,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_local`
[INFO] [stderr]   --> src/compiler/compiler.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn get_local(&mut self) -> Variable {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reclaim_local`
[INFO] [stderr]   --> src/compiler/compiler.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn reclaim_local(&mut self, var: Variable) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reset`
[INFO] [stderr]    --> src/vm/chunk.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     pub fn reset(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reset`
[INFO] [stderr]   --> src/vm/data.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn reset(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reset`
[INFO] [stderr]    --> src/vm/mod.rs:170:5
[INFO] [stderr]     |
[INFO] [stderr] 170 |     pub fn reset(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.21s
[INFO] running `"docker" "inspect" "a40cfce2cc405210442d6068b428acd9239765ec4639adc27acc3f30c8347697"`
[INFO] running `"docker" "rm" "-f" "a40cfce2cc405210442d6068b428acd9239765ec4639adc27acc3f30c8347697"`
[INFO] [stdout] a40cfce2cc405210442d6068b428acd9239765ec4639adc27acc3f30c8347697
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/yiransheng/basic_rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1c6c1119d8266809f69106bf59a1905be0782b6cbea241d2f224f41d2a9154d6
[INFO] running `"docker" "start" "-a" "1c6c1119d8266809f69106bf59a1905be0782b6cbea241d2f224f41d2a9154d6"`
[INFO] [stderr] warning: unused manifest key: profile.bench.target-cpu
[INFO] [stderr]    Compiling serde v1.0.81
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling thread-scoped v1.0.2
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling cast v0.2.2
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling term v0.5.1
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling itertools-num v0.1.3
[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]    Compiling csv-core v0.1.4
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.81
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling criterion-plot v0.2.5
[INFO] [stderr]    Compiling criterion-stats v0.2.5
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling simplelog v0.5.3
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling serde_json v1.0.33
[INFO] [stderr]    Compiling csv v1.0.2
[INFO] [stderr]    Compiling handlebars v0.32.4
[INFO] [stderr]    Compiling criterion v0.2.5
[INFO] [stderr]    Compiling basic_rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::collections::VecDeque`
[INFO] [stderr]  --> src/vm/chunk.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::VecDeque;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::VecDeque`
[INFO] [stderr]  --> src/vm/chunk.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::VecDeque;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]  --> src/compiler/anon_var.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     id: u16,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_anonymous`
[INFO] [stderr]   --> src/compiler/anon_var.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn next_anonymous(&mut self) -> Variable {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `free`
[INFO] [stderr]   --> src/compiler/compiler.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     free: FxHashSet<Variable>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `var_gen`
[INFO] [stderr]   --> src/compiler/compiler.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     var_gen: AnonVarGen,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_local`
[INFO] [stderr]   --> src/compiler/compiler.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn get_local(&mut self) -> Variable {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reclaim_local`
[INFO] [stderr]   --> src/compiler/compiler.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn reclaim_local(&mut self, var: Variable) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_source_error`
[INFO] [stderr]   --> src/error_print.rs:75:1
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn print_source_error<E: Error>(err: SourceMapped<E>, source: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `u16_to_bytes`
[INFO] [stderr]   --> src/ast/variable.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn u16_to_bytes(b: u16) -> [u8; 2] {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_u16`
[INFO] [stderr]   --> src/ast/variable.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     pub fn from_u16(b: u16) -> Result<Self, NameError> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_u16_unchecked`
[INFO] [stderr]   --> src/ast/variable.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     pub fn from_u16_unchecked(b: u16) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]  --> src/compiler/anon_var.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     id: u16,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_anonymous`
[INFO] [stderr]   --> src/compiler/anon_var.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn next_anonymous(&mut self) -> Variable {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `free`
[INFO] [stderr]   --> src/compiler/compiler.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     free: FxHashSet<Variable>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `var_gen`
[INFO] [stderr]   --> src/compiler/compiler.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     var_gen: AnonVarGen,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_local`
[INFO] [stderr]   --> src/compiler/compiler.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn get_local(&mut self) -> Variable {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reclaim_local`
[INFO] [stderr]   --> src/compiler/compiler.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn reclaim_local(&mut self, var: Variable) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reset`
[INFO] [stderr]    --> src/vm/chunk.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     pub fn reset(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reset`
[INFO] [stderr]   --> src/vm/data.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn reset(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reset`
[INFO] [stderr]    --> src/vm/mod.rs:170:5
[INFO] [stderr]     |
[INFO] [stderr] 170 |     pub fn reset(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 38s
[INFO] running `"docker" "inspect" "1c6c1119d8266809f69106bf59a1905be0782b6cbea241d2f224f41d2a9154d6"`
[INFO] running `"docker" "rm" "-f" "1c6c1119d8266809f69106bf59a1905be0782b6cbea241d2f224f41d2a9154d6"`
[INFO] [stdout] 1c6c1119d8266809f69106bf59a1905be0782b6cbea241d2f224f41d2a9154d6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/yiransheng/basic_rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] 670e290eb2ea22c3352cf19de8ca6d99e3b0517c334b2122ed42c8a67eea4b40
[INFO] running `"docker" "start" "-a" "670e290eb2ea22c3352cf19de8ca6d99e3b0517c334b2122ed42c8a67eea4b40"`
[INFO] [stderr] warning: unused manifest key: profile.bench.target-cpu
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/basic_rs-c9b2bfc290938a62
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test scanner::number::tests::test_match_num_err ... ok
[INFO] [stdout] test parser::tests::test_parse_simple ... ok
[INFO] [stdout] test scanner::number::tests::test_match_num_ok ... ok
[INFO] [stdout] test compiler::tests::test_simple ... ok
[INFO] [stdout] test scanner::test_scanner::test_program ... ok
[INFO] [stdout] test scanner::test_keyword::test_match_keywords ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/basic_rs-f6e713e78ada5aa9
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test scanner::number::tests::test_match_num_err ... ok
[INFO] [stdout] test scanner::test_keyword::test_match_keywords ... ok
[INFO] [stdout] test scanner::test_scanner::test_program ... ok
[INFO] [stdout] test scanner::number::tests::test_match_num_ok ... ok
[INFO] [stdout] test parser::tests::test_parse_simple ... ok
[INFO] [stdout] test tests::test_parse_source_loc ... ok
[INFO] [stdout] test compiler::tests::test_simple ... ok
[INFO] [stdout] test tests::test_parse_error ... ok
[INFO] [stdout] test tests::test_sample_programs ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests basic_rs
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "670e290eb2ea22c3352cf19de8ca6d99e3b0517c334b2122ed42c8a67eea4b40"`
[INFO] running `"docker" "rm" "-f" "670e290eb2ea22c3352cf19de8ca6d99e3b0517c334b2122ed42c8a67eea4b40"`
[INFO] [stdout] 670e290eb2ea22c3352cf19de8ca6d99e3b0517c334b2122ed42c8a67eea4b40