[INFO] cloning repository Guaschman/hm-interpreter
[INFO] running `"git" "clone" "--bare" "git://github.com/Guaschman/hm-interpreter.git" "work/cache/sources/gh/Guaschman/hm-interpreter"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/Guaschman/hm-interpreter'...
[INFO] running `"git" "clone" "work/cache/sources/gh/Guaschman/hm-interpreter" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/Guaschman/hm-interpreter"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/Guaschman/hm-interpreter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Guaschman/hm-interpreter" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/Guaschman/hm-interpreter"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/Guaschman/hm-interpreter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4a94ae4fa5d4dd7c3849dc6d9075a3e1748a973d
[INFO] sha for GitHub repo Guaschman/hm-interpreter: 4a94ae4fa5d4dd7c3849dc6d9075a3e1748a973d
[INFO] validating manifest of Guaschman/hm-interpreter on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Guaschman/hm-interpreter on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Guaschman/hm-interpreter
[INFO] finished frobbing Guaschman/hm-interpreter
[INFO] frobbed toml for Guaschman/hm-interpreter written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/Guaschman/hm-interpreter/Cargo.toml
[INFO] started frobbing Guaschman/hm-interpreter
[INFO] finished frobbing Guaschman/hm-interpreter
[INFO] frobbed toml for Guaschman/hm-interpreter written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/Guaschman/hm-interpreter/Cargo.toml
[INFO] crate Guaschman/hm-interpreter already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/Guaschman/hm-interpreter/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nom-trace v0.2.1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Guaschman/hm-interpreter against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-1/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/Guaschman/hm-interpreter:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 86dc715fccc1903e1085e25692dbc6ef76b6aa876e5c59db080560cba5a45d3a
[INFO] running `"docker" "start" "-a" "86dc715fccc1903e1085e25692dbc6ef76b6aa876e5c59db080560cba5a45d3a"`
[INFO] [stderr]     Checking lexical-core v0.4.2
[INFO] [stderr]     Checking nom v5.0.0
[INFO] [stderr]     Checking nom-trace v0.2.1
[INFO] [stderr]     Checking hm-interpreter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `extend`
[INFO] [stderr]   --> src/type_checker.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     fn extend(mut self, (v, s): (Var, Scheme)) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]   --> src/type_checker.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn remove(mut self, var: Var) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `extend`
[INFO] [stderr]   --> src/type_checker.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     fn extend(mut self, (v, s): (Var, Scheme)) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]   --> src/type_checker.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn remove(mut self, var: Var) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.05s
[INFO] running `"docker" "inspect" "86dc715fccc1903e1085e25692dbc6ef76b6aa876e5c59db080560cba5a45d3a"`
[INFO] running `"docker" "rm" "-f" "86dc715fccc1903e1085e25692dbc6ef76b6aa876e5c59db080560cba5a45d3a"`
[INFO] [stdout] 86dc715fccc1903e1085e25692dbc6ef76b6aa876e5c59db080560cba5a45d3a