[INFO] updating cached repository hmc-memsafe-2016f/wk2-starter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hmc-memsafe-2016f/wk2-starter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hmc-memsafe-2016f/wk2-starter" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/hmc-memsafe-2016f/wk2-starter"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/hmc-memsafe-2016f/wk2-starter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hmc-memsafe-2016f/wk2-starter" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/hmc-memsafe-2016f/wk2-starter"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/hmc-memsafe-2016f/wk2-starter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dde90e4a050fbfb2d74e08d7736e20dc87045162
[INFO] sha for GitHub repo hmc-memsafe-2016f/wk2-starter: dde90e4a050fbfb2d74e08d7736e20dc87045162
[INFO] validating manifest of hmc-memsafe-2016f/wk2-starter on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hmc-memsafe-2016f/wk2-starter on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hmc-memsafe-2016f/wk2-starter
[INFO] finished frobbing hmc-memsafe-2016f/wk2-starter
[INFO] frobbed toml for hmc-memsafe-2016f/wk2-starter written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/hmc-memsafe-2016f/wk2-starter/Cargo.toml
[INFO] started frobbing hmc-memsafe-2016f/wk2-starter
[INFO] finished frobbing hmc-memsafe-2016f/wk2-starter
[INFO] frobbed toml for hmc-memsafe-2016f/wk2-starter written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/hmc-memsafe-2016f/wk2-starter/Cargo.toml
[INFO] crate hmc-memsafe-2016f/wk2-starter already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/hmc-memsafe-2016f/wk2-starter/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking hmc-memsafe-2016f/wk2-starter against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-6/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/hmc-memsafe-2016f/wk2-starter:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3c589b1f02104d8e93eb8bf2ede8400454ffc2b1a17c7d3c611c91758abbe206
[INFO] running `"docker" "start" "-a" "3c589b1f02104d8e93eb8bf2ede8400454ffc2b1a17c7d3c611c91758abbe206"`
[INFO] [stderr]     Checking wk2-starter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: enum is never used: `Expr`
[INFO] [stderr]  --> src/expr/expr.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub enum Expr {
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `BinOp`
[INFO] [stderr]   --> src/expr/expr.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub enum BinOp {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `evaluate`
[INFO] [stderr]   --> src/expr/expr.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn evaluate(&self) -> isize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `operation_count`
[INFO] [stderr]   --> src/expr/expr.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn operation_count(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `depth`
[INFO] [stderr]   --> src/expr/expr.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn depth(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Expr`
[INFO] [stderr]  --> src/expr/expr.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub enum Expr {
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `BinOp`
[INFO] [stderr]   --> src/expr/expr.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub enum BinOp {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `evaluate`
[INFO] [stderr]   --> src/expr/expr.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn evaluate(&self) -> isize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `operation_count`
[INFO] [stderr]   --> src/expr/expr.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn operation_count(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `depth`
[INFO] [stderr]   --> src/expr/expr.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn depth(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `"docker" "inspect" "3c589b1f02104d8e93eb8bf2ede8400454ffc2b1a17c7d3c611c91758abbe206"`
[INFO] running `"docker" "rm" "-f" "3c589b1f02104d8e93eb8bf2ede8400454ffc2b1a17c7d3c611c91758abbe206"`
[INFO] [stdout] 3c589b1f02104d8e93eb8bf2ede8400454ffc2b1a17c7d3c611c91758abbe206