[INFO] updating cached repository https://github.com/koba-e964/rust-number-theory [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 6585894b5b711fd471dcb52a402a289eca26a1df [INFO] testing koba-e964/rust-number-theory against 1.44.0 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoba-e964%2Frust-number-theory" "/workspace/builds/worker-9/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/koba-e964/rust-number-theory on toolchain 1.44.0 [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/koba-e964/rust-number-theory [INFO] finished tweaking git repo https://github.com/koba-e964/rust-number-theory [INFO] tweaked toml for git repo https://github.com/koba-e964/rust-number-theory written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/koba-e964/rust-number-theory already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 3cde533d63370ec863257fade1e2d6dc70544f4348065f86c645b8d70af93f92 [INFO] running `"docker" "start" "-a" "3cde533d63370ec863257fade1e2d6dc70544f4348065f86c645b8d70af93f92"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling num-traits v0.2.6 [INFO] [stderr] Compiling num-bigint v0.2.1 [INFO] [stderr] Compiling num-rational v0.2.1 [INFO] [stderr] Compiling num-complex v0.2.1 [INFO] [stderr] Compiling num-iter v0.1.37 [INFO] [stderr] Compiling num-integer v0.1.39 [INFO] [stderr] Compiling num v0.2.0 [INFO] [stderr] Compiling rust-number-theory v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/polynomial.rs:199:19 [INFO] [stderr] | [INFO] [stderr] 199 | (self as &std::fmt::Display).fmt(f) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::fmt::Display` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `BigInt` [INFO] [stderr] --> src/determinant.rs:3:11 [INFO] [stderr] | [INFO] [stderr] 3 | use num::{BigInt, BigRational, One, Zero}; [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead [INFO] [stderr] --> src/polynomial.rs:106:31 [INFO] [stderr] | [INFO] [stderr] 106 | let mut tmp = std::mem::uninitialized(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/polynomial.rs:255:13 [INFO] [stderr] | [INFO] [stderr] 255 | let mut coef = &tmp[i + b_deg] / &lcb; [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/polynomial.rs:278:13 [INFO] [stderr] | [INFO] [stderr] 278 | let mut coef = &tmp[i + b_deg] / lc; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `a` as immutable because it is also borrowed as mutable [INFO] [stderr] --> src/determinant.rs:28:39 [INFO] [stderr] | [INFO] [stderr] 28 | a[j][k] -= &factor * &a[i][k]; [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] error: aborting due to previous error; 5 warnings emitted [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0502`. [INFO] [stderr] error: could not compile `rust-number-theory`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "3cde533d63370ec863257fade1e2d6dc70544f4348065f86c645b8d70af93f92"` [INFO] running `"docker" "rm" "-f" "3cde533d63370ec863257fade1e2d6dc70544f4348065f86c645b8d70af93f92"` [INFO] [stdout] 3cde533d63370ec863257fade1e2d6dc70544f4348065f86c645b8d70af93f92