[INFO] cloning repository https://github.com/DeltaSiera/big_number
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DeltaSiera/big_number" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeltaSiera%2Fbig_number", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeltaSiera%2Fbig_number'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 53eecaceb5588584d778493af637c7326982558a
[INFO] checking DeltaSiera/big_number against try#3a4cb0edb4040379c037e06efeb5409e44be7b77 for pr-146377
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeltaSiera%2Fbig_number" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/DeltaSiera/big_number
[INFO] finished tweaking git repo https://github.com/DeltaSiera/big_number
[INFO] tweaked toml for git repo https://github.com/DeltaSiera/big_number written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DeltaSiera/big_number on toolchain 3a4cb0edb4040379c037e06efeb5409e44be7b77
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4cb0edb4040379c037e06efeb5409e44be7b77" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/DeltaSiera/big_number already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4cb0edb4040379c037e06efeb5409e44be7b77" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4cb0edb4040379c037e06efeb5409e44be7b77" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b8eac081fc24a565f98b5799eb5032cada2548846347096c81d441f8695f834
[INFO] running `Command { std: "docker" "start" "-a" "4b8eac081fc24a565f98b5799eb5032cada2548846347096c81d441f8695f834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b8eac081fc24a565f98b5799eb5032cada2548846347096c81d441f8695f834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b8eac081fc24a565f98b5799eb5032cada2548846347096c81d441f8695f834", kill_on_drop: false }`
[INFO] [stdout] 4b8eac081fc24a565f98b5799eb5032cada2548846347096c81d441f8695f834
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4cb0edb4040379c037e06efeb5409e44be7b77" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3e0b114ad2e95aa109002ab53549609be41cee5398915f67ef8114f5ff18a1b
[INFO] running `Command { std: "docker" "start" "-a" "c3e0b114ad2e95aa109002ab53549609be41cee5398915f67ef8114f5ff18a1b", kill_on_drop: false }`
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking untitled v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `num_bigint`
[INFO] [stdout]  --> src/big_integer.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use num_bigint::BigUint;
[INFO] [stdout]   |     ^^^^^^^^^^ use of unresolved module or unlinked crate `num_bigint`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `num_bigint`, use `cargo add num_bigint` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `num_bigint`
[INFO] [stdout]  --> src/big_integer.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use num_bigint::BigUint;
[INFO] [stdout]   |     ^^^^^^^^^^ use of unresolved module or unlinked crate `num_bigint`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `num_bigint`, use `cargo add num_bigint` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]    --> src/big_integer.rs:304:9
[INFO] [stdout]     |
[INFO] [stdout] 304 |     use std::iter::FromIterator;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]    --> src/big_integer.rs:116:21
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let mut x = BigInt::from_number(0);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]    --> src/big_integer.rs:117:21
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let mut y = BigInt::from_number(0);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]    --> src/big_integer.rs:162:30
[INFO] [stdout]     |
[INFO] [stdout] 162 |     fn add_assign(&mut self, rhs: &BigInt) {
[INFO] [stdout]     |                              ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]    --> src/big_integer.rs:116:21
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let mut x = BigInt::from_number(0);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]    --> src/big_integer.rs:117:21
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let mut y = BigInt::from_number(0);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]    --> src/big_integer.rs:162:30
[INFO] [stdout]     |
[INFO] [stdout] 162 |     fn add_assign(&mut self, rhs: &BigInt) {
[INFO] [stdout]     |                              ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number_zero`
[INFO] [stdout]    --> src/big_integer.rs:308:13
[INFO] [stdout]     |
[INFO] [stdout] 308 |         let number_zero = BigInt::new("0");
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_number_zero`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number_one`
[INFO] [stdout]    --> src/big_integer.rs:314:13
[INFO] [stdout]     |
[INFO] [stdout] 314 |         let number_one = BigInt::new("1");
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_number_one`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `untitled` (bin "untitled") due to 1 previous error; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `untitled` (bin "untitled" test) due to 1 previous error; 7 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "c3e0b114ad2e95aa109002ab53549609be41cee5398915f67ef8114f5ff18a1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3e0b114ad2e95aa109002ab53549609be41cee5398915f67ef8114f5ff18a1b", kill_on_drop: false }`
[INFO] [stdout] c3e0b114ad2e95aa109002ab53549609be41cee5398915f67ef8114f5ff18a1b
