[INFO] fetching crate rcmath 0.0.1...
[INFO] building rcmath-0.0.1 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate rcmath 0.0.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate rcmath 0.0.1 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rcmath 0.0.1
[INFO] finished tweaking crates.io crate rcmath 0.0.1
[INFO] tweaked toml for crates.io crate rcmath 0.0.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71c0a525048c6ec31e197d1e2cdf4348d0630248751f3cf2c494fdec8780cbe6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "71c0a525048c6ec31e197d1e2cdf4348d0630248751f3cf2c494fdec8780cbe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71c0a525048c6ec31e197d1e2cdf4348d0630248751f3cf2c494fdec8780cbe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71c0a525048c6ec31e197d1e2cdf4348d0630248751f3cf2c494fdec8780cbe6", kill_on_drop: false }`
[INFO] [stdout] 71c0a525048c6ec31e197d1e2cdf4348d0630248751f3cf2c494fdec8780cbe6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba521e4acb9f1b4d3b450101189b5af42aab111825d977982bb5df9f0de57e12
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ba521e4acb9f1b4d3b450101189b5af42aab111825d977982bb5df9f0de57e12", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling rcmath v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0407]: method `add_usize` is not a member of trait `Step`
[INFO] [stdout]    --> src/big_num.rs:413:5
[INFO] [stdout]     |
[INFO] [stdout] 413 | /     fn add_usize(&self, n: usize) -> Option<BigNum> {
[INFO] [stdout] 414 | |         Some(self.add_usize(n))
[INFO] [stdout] 415 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `Step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `replace_one` is not a member of trait `Step`
[INFO] [stdout]    --> src/big_num.rs:417:5
[INFO] [stdout]     |
[INFO] [stdout] 417 | /     fn replace_one(&mut self) -> BigNum {
[INFO] [stdout] 418 | |         self.clone()
[INFO] [stdout] 419 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `Step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `replace_zero` is not a member of trait `Step`
[INFO] [stdout]    --> src/big_num.rs:421:5
[INFO] [stdout]     |
[INFO] [stdout] 421 | /     fn replace_zero(&mut self) -> BigNum {
[INFO] [stdout] 422 | |         self.clone()
[INFO] [stdout] 423 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `Step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `add_one` is not a member of trait `Step`
[INFO] [stdout]    --> src/big_num.rs:425:5
[INFO] [stdout]     |
[INFO] [stdout] 425 | /     fn add_one(&self) -> BigNum {
[INFO] [stdout] 426 | |         self.clone() + BigNum::new_one()
[INFO] [stdout] 427 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `Step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `sub_one` is not a member of trait `Step`
[INFO] [stdout]    --> src/big_num.rs:429:5
[INFO] [stdout]     |
[INFO] [stdout] 429 | /     fn sub_one(&self) -> BigNum {
[INFO] [stdout] 430 | |         self.clone() - BigNum::new_one()
[INFO] [stdout] 431 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `Step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/big_num.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         (BigNum::new_empty()..self.clone())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Add`
[INFO] [stdout]  --> src/math.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Add, Div, Mul, Rem};
[INFO] [stdout]   |                ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0200]: the trait `Step` requires an `unsafe impl` declaration
[INFO] [stdout]    --> src/big_num.rs:408:1
[INFO] [stdout]     |
[INFO] [stdout] 408 | / impl Step for BigNum {
[INFO] [stdout] 409 | |     fn steps_between(start: &BigNum, end: &BigNum) -> Option<usize> {
[INFO] [stdout] 410 | |         let new_num = end - start;
[INFO] [stdout] 411 | |         new_num.to_usize()
[INFO] [stdout] ...   |
[INFO] [stdout] 431 | |     }
[INFO] [stdout] 432 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0200, E0407.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0200`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rcmath`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ba521e4acb9f1b4d3b450101189b5af42aab111825d977982bb5df9f0de57e12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba521e4acb9f1b4d3b450101189b5af42aab111825d977982bb5df9f0de57e12", kill_on_drop: false }`
[INFO] [stdout] ba521e4acb9f1b4d3b450101189b5af42aab111825d977982bb5df9f0de57e12
