[INFO] updating cached repository Pierre-Colin/rcvs [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/Pierre-Colin/rcvs [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/Pierre-Colin/rcvs" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Pierre-Colin/rcvs"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Pierre-Colin/rcvs'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/Pierre-Colin/rcvs" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Pierre-Colin/rcvs"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Pierre-Colin/rcvs'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 87420f24e216abe0b6336dd16d72ead96332d681 [INFO] sha for GitHub repo Pierre-Colin/rcvs: 87420f24e216abe0b6336dd16d72ead96332d681 [INFO] validating manifest of Pierre-Colin/rcvs on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of Pierre-Colin/rcvs on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing Pierre-Colin/rcvs [INFO] finished frobbing Pierre-Colin/rcvs [INFO] frobbed toml for Pierre-Colin/rcvs written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Pierre-Colin/rcvs/Cargo.toml [INFO] started frobbing Pierre-Colin/rcvs [INFO] finished frobbing Pierre-Colin/rcvs [INFO] frobbed toml for Pierre-Colin/rcvs written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Pierre-Colin/rcvs/Cargo.toml [INFO] crate Pierre-Colin/rcvs already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking Pierre-Colin/rcvs against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-4/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Pierre-Colin/rcvs:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 920a0a3bc3c64b6c219d7a717cf1000821e363825bfc820fe50cfa04e035d739 [INFO] running `"docker" "start" "-a" "920a0a3bc3c64b6c219d7a717cf1000821e363825bfc820fe50cfa04e035d739"` [INFO] [stderr] Checking approx v0.3.2 [INFO] [stderr] Checking rand v0.5.6 [INFO] [stderr] Checking alga v0.7.2 [INFO] [stderr] Checking nalgebra v0.16.13 [INFO] [stderr] warning[E0502]: cannot borrow `*self` as immutable because it is also borrowed as mutable [INFO] [stderr] --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.16.13/src/base/cg.rs:291:44 [INFO] [stderr] | [INFO] [stderr] 291 | self[(j, i)] += shift[j] * self[(D::dim() - 1, i)]; [INFO] [stderr] | ---------------------------^^^^------------------- [INFO] [stderr] | | | [INFO] [stderr] | | immutable borrow occurs here [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | mutable borrow later used here [INFO] [stderr] | [INFO] [stderr] = warning: this error has been downgraded to a warning for backwards compatibility with previous releases [INFO] [stderr] = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future [INFO] [stderr] = note: for more information, try `rustc --explain E0729` [INFO] [stderr] [INFO] [stderr] Checking rcvs v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: value assigned to `xb` is never read [INFO] [stderr] --> src/simplex.rs:51:13 [INFO] [stderr] | [INFO] [stderr] 51 | let mut xb = feasible_basic_vector(&a.columns(0, m).clone(), b); [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:263:13 [INFO] [stderr] | [INFO] [stderr] 263 | let mut j = i; [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: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:72:9 [INFO] [stderr] | [INFO] [stderr] 72 | writeln!(f, "Graph {{"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:73:9 [INFO] [stderr] | [INFO] [stderr] 73 | writeln!(f, "Alternatives: {:?}", self.v); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:74:9 [INFO] [stderr] | [INFO] [stderr] 74 | writeln!(f, "{}", self.a); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:250:9 [INFO] [stderr] | [INFO] [stderr] 250 | writeln!(f, "Election {{"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:253:13 [INFO] [stderr] | [INFO] [stderr] 253 | writeln!(f, " {} beats {} {} times", a, b, n); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: value assigned to `xb` is never read [INFO] [stderr] --> src/simplex.rs:51:13 [INFO] [stderr] | [INFO] [stderr] 51 | let mut xb = feasible_basic_vector(&a.columns(0, m).clone(), b); [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:263:13 [INFO] [stderr] | [INFO] [stderr] 263 | let mut j = i; [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: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:72:9 [INFO] [stderr] | [INFO] [stderr] 72 | writeln!(f, "Graph {{"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:73:9 [INFO] [stderr] | [INFO] [stderr] 73 | writeln!(f, "Alternatives: {:?}", self.v); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:74:9 [INFO] [stderr] | [INFO] [stderr] 74 | writeln!(f, "{}", self.a); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:250:9 [INFO] [stderr] | [INFO] [stderr] 250 | writeln!(f, "Election {{"); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:253:13 [INFO] [stderr] | [INFO] [stderr] 253 | writeln!(f, " {} beats {} {} times", a, b, n); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 37.05s [INFO] running `"docker" "inspect" "920a0a3bc3c64b6c219d7a717cf1000821e363825bfc820fe50cfa04e035d739"` [INFO] running `"docker" "rm" "-f" "920a0a3bc3c64b6c219d7a717cf1000821e363825bfc820fe50cfa04e035d739"` [INFO] [stdout] 920a0a3bc3c64b6c219d7a717cf1000821e363825bfc820fe50cfa04e035d739