[INFO] crate scryer-prolog 0.8.53 is already in cache [INFO] extracting crate scryer-prolog 0.8.53 into work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/scryer-prolog/0.8.53 [INFO] extracting crate scryer-prolog 0.8.53 into work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/scryer-prolog/0.8.53 [INFO] validating manifest of scryer-prolog-0.8.53 on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of scryer-prolog-0.8.53 on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing scryer-prolog-0.8.53 [INFO] finished frobbing scryer-prolog-0.8.53 [INFO] frobbed toml for scryer-prolog-0.8.53 written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/scryer-prolog/0.8.53/Cargo.toml [INFO] started frobbing scryer-prolog-0.8.53 [INFO] finished frobbing scryer-prolog-0.8.53 [INFO] frobbed toml for scryer-prolog-0.8.53 written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/scryer-prolog/0.8.53/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking scryer-prolog-0.8.53 against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-7/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/scryer-prolog/0.8.53:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 83e767ba725e29eb59583ec2bd4c881959c784e39e552c5378ad9225e266bb58 [INFO] running `"docker" "start" "-a" "83e767ba725e29eb59583ec2bd4c881959c784e39e552c5378ad9225e266bb58"` [INFO] [stderr] Compiling readline_rs_compat v0.1.9 [INFO] [stderr] Checking ref_thread_local v0.0.0 [INFO] [stderr] Checking downcast v0.10.0 [INFO] [stderr] Checking prolog_parser v0.8.21 [INFO] [stderr] Checking scryer-prolog v0.8.53 (/opt/crater/workdir) [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/mod.rs:447:29 [INFO] [stderr] | [INFO] [stderr] 447 | let mut output = PrinterOutputter::new(); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/toplevel.rs:375:29 [INFO] [stderr] | [INFO] [stderr] 375 | if let Some(mut inner_term) = inner_term { [INFO] [stderr] | ----^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/compile.rs:146:21 [INFO] [stderr] | [INFO] [stderr] 146 | Ok((mut code, vars)) => wam.submit_query(code, vars), [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/modules.rs:145:17 [INFO] [stderr] | [INFO] [stderr] 145 | let mut atom_tbl = self.atom_tbl(); [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/machine_state.rs:666:21 [INFO] [stderr] | [INFO] [stderr] 666 | let mut list = machine_st.try_from_list(temp_v!(1), stub)?; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/system_calls.rs:942:21 [INFO] [stderr] | [INFO] [stderr] 942 | let mut attr_var_list = match attr_var { [INFO] [stderr] | ----^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/system_calls.rs:1183:21 [INFO] [stderr] | [INFO] [stderr] 1183 | let mut bindings = mem::replace(&mut self.attr_var_init.bindings, vec![]); [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/system_calls.rs:1520:21 [INFO] [stderr] | [INFO] [stderr] 1520 | let mut output = printer.print(addr); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/mod.rs:447:29 [INFO] [stderr] | [INFO] [stderr] 447 | let mut output = PrinterOutputter::new(); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/toplevel.rs:375:29 [INFO] [stderr] | [INFO] [stderr] 375 | if let Some(mut inner_term) = inner_term { [INFO] [stderr] | ----^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/compile.rs:146:21 [INFO] [stderr] | [INFO] [stderr] 146 | Ok((mut code, vars)) => wam.submit_query(code, vars), [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/modules.rs:145:17 [INFO] [stderr] | [INFO] [stderr] 145 | let mut atom_tbl = self.atom_tbl(); [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/machine_state.rs:666:21 [INFO] [stderr] | [INFO] [stderr] 666 | let mut list = machine_st.try_from_list(temp_v!(1), stub)?; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/system_calls.rs:942:21 [INFO] [stderr] | [INFO] [stderr] 942 | let mut attr_var_list = match attr_var { [INFO] [stderr] | ----^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/system_calls.rs:1183:21 [INFO] [stderr] | [INFO] [stderr] 1183 | let mut bindings = mem::replace(&mut self.attr_var_init.bindings, vec![]); [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/prolog/machine/system_calls.rs:1520:21 [INFO] [stderr] | [INFO] [stderr] 1520 | let mut output = printer.print(addr); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 14.18s [INFO] running `"docker" "inspect" "83e767ba725e29eb59583ec2bd4c881959c784e39e552c5378ad9225e266bb58"` [INFO] running `"docker" "rm" "-f" "83e767ba725e29eb59583ec2bd4c881959c784e39e552c5378ad9225e266bb58"` [INFO] [stdout] 83e767ba725e29eb59583ec2bd4c881959c784e39e552c5378ad9225e266bb58