[INFO] fetching crate number-diff 0.1.4...
[INFO] building number-diff-0.1.4 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate number-diff 0.1.4 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate number-diff 0.1.4
[INFO] finished tweaking crates.io crate number-diff 0.1.4
[INFO] tweaked toml for crates.io crate number-diff 0.1.4 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate number-diff 0.1.4 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.14.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce1e38238ed4d488392db278195d98cbaac0a5171e129c426e5dcbfd5b20fada
[INFO] running `Command { std: "docker" "start" "-a" "ce1e38238ed4d488392db278195d98cbaac0a5171e129c426e5dcbfd5b20fada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce1e38238ed4d488392db278195d98cbaac0a5171e129c426e5dcbfd5b20fada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce1e38238ed4d488392db278195d98cbaac0a5171e129c426e5dcbfd5b20fada", kill_on_drop: false }`
[INFO] [stdout] ce1e38238ed4d488392db278195d98cbaac0a5171e129c426e5dcbfd5b20fada
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60b593f41e244398af33feb4d4974a575ca5901af9899eb097e5c97dbf192279
[INFO] running `Command { std: "docker" "start" "-a" "60b593f41e244398af33feb4d4974a575ca5901af9899eb097e5c97dbf192279", kill_on_drop: false }`
[INFO] [stderr]    Compiling number-diff v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `useful_functions::*`
[INFO] [stdout]  --> src/functions/utils/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use useful_functions::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "60b593f41e244398af33feb4d4974a575ca5901af9899eb097e5c97dbf192279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60b593f41e244398af33feb4d4974a575ca5901af9899eb097e5c97dbf192279", kill_on_drop: false }`
[INFO] [stdout] 60b593f41e244398af33feb4d4974a575ca5901af9899eb097e5c97dbf192279
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a61f5acee787d2997ec80e578a61cccb5f1213cc25f47cb1162c48bdf05c2fb
[INFO] running `Command { std: "docker" "start" "-a" "8a61f5acee787d2997ec80e578a61cccb5f1213cc25f47cb1162c48bdf05c2fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling number-diff v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `useful_functions::*`
[INFO] [stdout]  --> src/functions/utils/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use useful_functions::*;
[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::f64::consts::PI`
[INFO] [stdout]  --> tests/functions.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::f64::consts::PI;
[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::f64::consts::PI`
[INFO] [stdout]  --> tests/functions.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::f64::consts::PI;
[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 variable: `correct_answer`
[INFO] [stdout]   --> tests/integration.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let correct_answer = i.factorial() as f64;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_correct_answer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `useful_functions::*`
[INFO] [stdout]  --> src/functions/utils/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use useful_functions::*;
[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 variable: `correct_answer`
[INFO] [stdout]   --> tests/integration.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let correct_answer = i.factorial() as f64;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_correct_answer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expansion`
[INFO] [stdout]   --> tests/expansion.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let expansion = sin.get_taylor_expansion(5, i as f64);
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expansion`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]    --> tests/functions.rs:92:10
[INFO] [stdout]     |
[INFO] [stdout]  92 |         -EULER_MASCHERONI.with_significant_figures(SIG_FIGS)
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]     = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: mutable reference created due to call to this method
[INFO] [stdout]    --> /opt/rustwide/workdir/src/functions/utils/useful_functions.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn with_significant_figures(&mut self, digits: u64) -> Self;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]    --> /opt/rustwide/workdir/src/utils/consts.rs:3:1
[INFO] [stdout]     |
[INFO] [stdout]   3 | pub const EULER_MASCHERONI: f64 = 0.5772156649015328606065120900824024310421_f64;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(const_item_mutation)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expansion`
[INFO] [stdout]   --> tests/expansion.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |         let expansion = sin.get_taylor_expansion(5, i as f64);
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expansion`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: taking a mutable reference to a `const` item
[INFO] [stdout]    --> tests/functions.rs:92:10
[INFO] [stdout]     |
[INFO] [stdout]  92 |         -EULER_MASCHERONI.with_significant_figures(SIG_FIGS)
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: each usage of a `const` item creates a new temporary
[INFO] [stdout]     = note: the mutable reference will refer to this temporary, not the original `const` item
[INFO] [stdout] note: mutable reference created due to call to this method
[INFO] [stdout]    --> /opt/rustwide/workdir/src/functions/utils/useful_functions.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn with_significant_figures(&mut self, digits: u64) -> Self;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: `const` item defined here
[INFO] [stdout]    --> /opt/rustwide/workdir/src/utils/consts.rs:3:1
[INFO] [stdout]     |
[INFO] [stdout]   3 | pub const EULER_MASCHERONI: f64 = 0.5772156649015328606065120900824024310421_f64;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(const_item_mutation)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "8a61f5acee787d2997ec80e578a61cccb5f1213cc25f47cb1162c48bdf05c2fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a61f5acee787d2997ec80e578a61cccb5f1213cc25f47cb1162c48bdf05c2fb", kill_on_drop: false }`
[INFO] [stdout] 8a61f5acee787d2997ec80e578a61cccb5f1213cc25f47cb1162c48bdf05c2fb