[INFO] updating cached repository gfreezy/rlox
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gfreezy/rlox
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gfreezy/rlox" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/gfreezy/rlox"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/gfreezy/rlox'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gfreezy/rlox" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/gfreezy/rlox"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/gfreezy/rlox'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ca52b0b58d3b2d1d8bf36d5e6827d1578707c1a2
[INFO] sha for GitHub repo gfreezy/rlox: ca52b0b58d3b2d1d8bf36d5e6827d1578707c1a2
[INFO] validating manifest of gfreezy/rlox on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gfreezy/rlox on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing gfreezy/rlox
[INFO] finished frobbing gfreezy/rlox
[INFO] frobbed toml for gfreezy/rlox written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/gfreezy/rlox/Cargo.toml
[INFO] started frobbing gfreezy/rlox
[INFO] finished frobbing gfreezy/rlox
[INFO] frobbed toml for gfreezy/rlox written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/gfreezy/rlox/Cargo.toml
[INFO] crate gfreezy/rlox already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking gfreezy/rlox against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-5/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/gfreezy/rlox:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b44ea9bd0c3875a040ea8a7f90a6cb99da23b3d4f88ddbb086fa9589c6e13ad3
[INFO] running `"docker" "start" "-a" "b44ea9bd0c3875a040ea8a7f90a6cb99da23b3d4f88ddbb086fa9589c6e13ad3"`
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]     Checking backtrace v0.3.30
[INFO] [stderr]    Compiling proc-macro-hack v0.5.7
[INFO] [stderr]    Compiling snafu-derive v0.4.1
[INFO] [stderr]    Compiling num_enum v0.2.0
[INFO] [stderr]    Compiling paste-impl v0.1.5
[INFO] [stderr]     Checking paste v0.1.5
[INFO] [stderr]     Checking snafu v0.4.1
[INFO] [stderr]     Checking rlox v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variant is never constructed: `Previous`
[INFO] [stderr]    --> src/compiler.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 |     Previous,
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `error`
[INFO] [stderr]    --> src/compiler.rs:154:5
[INFO] [stderr]     |
[INFO] [stderr] 154 |     fn error(&mut self, msg: &str) -> Result<()> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/vm.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn write(&mut self, byte: u8, line: u32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_opcode`
[INFO] [stderr]   --> src/vm.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn write_opcode(&mut self, opcode: OpCode, line: u32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_constant`
[INFO] [stderr]   --> src/vm.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn write_constant(&mut self, value: Value, line: u32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Previous`
[INFO] [stderr]    --> src/compiler.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 |     Previous,
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `error`
[INFO] [stderr]    --> src/compiler.rs:154:5
[INFO] [stderr]     |
[INFO] [stderr] 154 |     fn error(&mut self, msg: &str) -> Result<()> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/vm.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn write(&mut self, byte: u8, line: u32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_opcode`
[INFO] [stderr]   --> src/vm.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn write_opcode(&mut self, opcode: OpCode, line: u32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_constant`
[INFO] [stderr]   --> src/vm.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn write_constant(&mut self, value: Value, line: u32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.99s
[INFO] running `"docker" "inspect" "b44ea9bd0c3875a040ea8a7f90a6cb99da23b3d4f88ddbb086fa9589c6e13ad3"`
[INFO] running `"docker" "rm" "-f" "b44ea9bd0c3875a040ea8a7f90a6cb99da23b3d4f88ddbb086fa9589c6e13ad3"`
[INFO] [stdout] b44ea9bd0c3875a040ea8a7f90a6cb99da23b3d4f88ddbb086fa9589c6e13ad3