[INFO] updating cached repository DillonJettCallis/rustLetLang
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/DillonJettCallis/rustLetLang
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/DillonJettCallis/rustLetLang" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/DillonJettCallis/rustLetLang"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/DillonJettCallis/rustLetLang'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/DillonJettCallis/rustLetLang" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/DillonJettCallis/rustLetLang"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/DillonJettCallis/rustLetLang'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 374682051b6c0829b36e560100f2665eee23296d
[INFO] sha for GitHub repo DillonJettCallis/rustLetLang: 374682051b6c0829b36e560100f2665eee23296d
[INFO] validating manifest of DillonJettCallis/rustLetLang 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 DillonJettCallis/rustLetLang 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 DillonJettCallis/rustLetLang
[INFO] finished frobbing DillonJettCallis/rustLetLang
[INFO] frobbed toml for DillonJettCallis/rustLetLang written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/DillonJettCallis/rustLetLang/Cargo.toml
[INFO] started frobbing DillonJettCallis/rustLetLang
[INFO] finished frobbing DillonJettCallis/rustLetLang
[INFO] frobbed toml for DillonJettCallis/rustLetLang written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/DillonJettCallis/rustLetLang/Cargo.toml
[INFO] crate DillonJettCallis/rustLetLang 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 DillonJettCallis/rustLetLang against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-5/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/DillonJettCallis/rustLetLang:/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] d55a76c60d8d268666aecda3e274dd2604e1542401f05264240be60c7ceeb88a
[INFO] running `"docker" "start" "-a" "d55a76c60d8d268666aecda3e274dd2604e1542401f05264240be60c7ceeb88a"`
[INFO] [stderr]    Compiling rust_let_lang v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `raw_shape`
[INFO] [stderr]   --> src/typechecker.rs:69:30
[INFO] [stderr]    |
[INFO] [stderr] 69 |     Expression::Block{shape: raw_shape, loc, body: raw_body} => {
[INFO] [stderr]    |                              ^^^^^^^^^ help: consider prefixing with an underscore: `_raw_shape`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `raw_shape`
[INFO] [stderr]    --> src/typechecker.rs:108:33
[INFO] [stderr]     |
[INFO] [stderr] 108 |     Expression::Variable{shape: raw_shape, loc, id} => {
[INFO] [stderr]     |                                 ^^^^^^^^^ help: consider prefixing with an underscore: `_raw_shape`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `shape`
[INFO] [stderr]    --> src/typechecker.rs:171:43
[INFO] [stderr]     |
[INFO] [stderr] 171 |   if let Expression::FunctionDeclaration {shape, loc, id, ..} = ex {
[INFO] [stderr]     |                                           ^^^^^ help: try ignoring the field: `shape: _`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `prev`
[INFO] [stderr]    --> src/parser.rs:232:3
[INFO] [stderr]     |
[INFO] [stderr] 232 |   fn prev(&mut self) {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]    --> src/parser.rs:312:3
[INFO] [stderr]     |
[INFO] [stderr] 312 |   String,
[INFO] [stderr]     |   ^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `"docker" "inspect" "d55a76c60d8d268666aecda3e274dd2604e1542401f05264240be60c7ceeb88a"`
[INFO] running `"docker" "rm" "-f" "d55a76c60d8d268666aecda3e274dd2604e1542401f05264240be60c7ceeb88a"`
[INFO] [stdout] d55a76c60d8d268666aecda3e274dd2604e1542401f05264240be60c7ceeb88a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-5/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/DillonJettCallis/rustLetLang:/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] 58871d87cc10e4e154503af512c7e409204a436568204337adc665d6f0923c15
[INFO] running `"docker" "start" "-a" "58871d87cc10e4e154503af512c7e409204a436568204337adc665d6f0923c15"`
[INFO] [stderr]    Compiling rust_let_lang v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `raw_shape`
[INFO] [stderr]   --> src/typechecker.rs:69:30
[INFO] [stderr]    |
[INFO] [stderr] 69 |     Expression::Block{shape: raw_shape, loc, body: raw_body} => {
[INFO] [stderr]    |                              ^^^^^^^^^ help: consider prefixing with an underscore: `_raw_shape`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `raw_shape`
[INFO] [stderr]    --> src/typechecker.rs:108:33
[INFO] [stderr]     |
[INFO] [stderr] 108 |     Expression::Variable{shape: raw_shape, loc, id} => {
[INFO] [stderr]     |                                 ^^^^^^^^^ help: consider prefixing with an underscore: `_raw_shape`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `shape`
[INFO] [stderr]    --> src/typechecker.rs:171:43
[INFO] [stderr]     |
[INFO] [stderr] 171 |   if let Expression::FunctionDeclaration {shape, loc, id, ..} = ex {
[INFO] [stderr]     |                                           ^^^^^ help: try ignoring the field: `shape: _`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `prev`
[INFO] [stderr]    --> src/parser.rs:232:3
[INFO] [stderr]     |
[INFO] [stderr] 232 |   fn prev(&mut self) {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]    --> src/parser.rs:312:3
[INFO] [stderr]     |
[INFO] [stderr] 312 |   String,
[INFO] [stderr]     |   ^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "58871d87cc10e4e154503af512c7e409204a436568204337adc665d6f0923c15"`
[INFO] running `"docker" "rm" "-f" "58871d87cc10e4e154503af512c7e409204a436568204337adc665d6f0923c15"`
[INFO] [stdout] 58871d87cc10e4e154503af512c7e409204a436568204337adc665d6f0923c15
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-5/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/DillonJettCallis/rustLetLang:/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] c794e01a3726f564c046ba082c90fb7194263b4d65a33f72f65c681e264d3e8d
[INFO] running `"docker" "start" "-a" "c794e01a3726f564c046ba082c90fb7194263b4d65a33f72f65c681e264d3e8d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_let_lang-9d1a6ba3c4b629a8
[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" "c794e01a3726f564c046ba082c90fb7194263b4d65a33f72f65c681e264d3e8d"`
[INFO] running `"docker" "rm" "-f" "c794e01a3726f564c046ba082c90fb7194263b4d65a33f72f65c681e264d3e8d"`
[INFO] [stdout] c794e01a3726f564c046ba082c90fb7194263b4d65a33f72f65c681e264d3e8d