[INFO] fetching crate algebraics 0.3.0...
[INFO] checking algebraics-0.3.0 against try#8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f for pr-114559
[INFO] extracting crate algebraics 0.3.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate algebraics 0.3.0 on toolchain 8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate algebraics 0.3.0
[INFO] finished tweaking crates.io crate algebraics 0.3.0
[INFO] tweaked toml for crates.io crate algebraics 0.3.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba2256590b873800c256a14fba6277c1f260efcfc4e3634cae36afec8773cb70
[INFO] running `Command { std: "docker" "start" "-a" "ba2256590b873800c256a14fba6277c1f260efcfc4e3634cae36afec8773cb70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba2256590b873800c256a14fba6277c1f260efcfc4e3634cae36afec8773cb70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba2256590b873800c256a14fba6277c1f260efcfc4e3634cae36afec8773cb70", kill_on_drop: false }`
[INFO] [stdout] ba2256590b873800c256a14fba6277c1f260efcfc4e3634cae36afec8773cb70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+8d0c454bea9d9cc2cc7e288388f3b7d1da19c04f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ef00eced0e09aabfc5422a1d97afdc80c66ba60a2d452b75c30322fd6f3f691
[INFO] running `Command { std: "docker" "start" "-a" "3ef00eced0e09aabfc5422a1d97afdc80c66ba60a2d452b75c30322fd6f3f691", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking algebraics v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `minimal_polynomial` is never read
[INFO] [stdout]    --> src/algebraic_numbers.rs:319:5
[INFO] [stdout]     |
[INFO] [stdout] 318 | struct IntervalShrinker<'a> {
[INFO] [stdout]     |        ---------------- field in this struct
[INFO] [stdout] 319 |     minimal_polynomial: &'a Polynomial<BigInt>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `IntervalShrinker` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/array2d.rs:73:28
[INFO] [stdout]    |
[INFO] [stdout] 73 |             data: this.data.borrow(),
[INFO] [stdout]    |                            ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `[T]` does not implement `Borrow`, so calling `borrow` on `&[T]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/polynomial/div_rem.rs:247:67
[INFO] [stdout]     |
[INFO] [stdout] 247 |         let (quotient, factor) = self.clone().exact_pseudo_div(rhs.borrow());
[INFO] [stdout]     |                                                                   ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Polynomial<T>` does not implement `Borrow`, so calling `borrow` on `&Polynomial<T>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/polynomial/div_rem.rs:251:75
[INFO] [stdout]     |
[INFO] [stdout] 251 |         let (quotient, factor) = self.clone().checked_exact_pseudo_div(rhs.borrow())?;
[INFO] [stdout]     |                                                                           ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Polynomial<T>` does not implement `Borrow`, so calling `borrow` on `&Polynomial<T>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `minimal_polynomial` is never read
[INFO] [stdout]    --> src/algebraic_numbers.rs:319:5
[INFO] [stdout]     |
[INFO] [stdout] 318 | struct IntervalShrinker<'a> {
[INFO] [stdout]     |        ---------------- field in this struct
[INFO] [stdout] 319 |     minimal_polynomial: &'a Polynomial<BigInt>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `IntervalShrinker` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/array2d.rs:73:28
[INFO] [stdout]    |
[INFO] [stdout] 73 |             data: this.data.borrow(),
[INFO] [stdout]    |                            ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `[T]` does not implement `Borrow`, so calling `borrow` on `&[T]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/polynomial/div_rem.rs:247:67
[INFO] [stdout]     |
[INFO] [stdout] 247 |         let (quotient, factor) = self.clone().exact_pseudo_div(rhs.borrow());
[INFO] [stdout]     |                                                                   ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `polynomial::Polynomial<T>` does not implement `Borrow`, so calling `borrow` on `&polynomial::Polynomial<T>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/polynomial/div_rem.rs:251:75
[INFO] [stdout]     |
[INFO] [stdout] 251 |         let (quotient, factor) = self.clone().checked_exact_pseudo_div(rhs.borrow())?;
[INFO] [stdout]     |                                                                           ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `polynomial::Polynomial<T>` does not implement `Borrow`, so calling `borrow` on `&polynomial::Polynomial<T>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.36s
[INFO] running `Command { std: "docker" "inspect" "3ef00eced0e09aabfc5422a1d97afdc80c66ba60a2d452b75c30322fd6f3f691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ef00eced0e09aabfc5422a1d97afdc80c66ba60a2d452b75c30322fd6f3f691", kill_on_drop: false }`
[INFO] [stdout] 3ef00eced0e09aabfc5422a1d97afdc80c66ba60a2d452b75c30322fd6f3f691
