[INFO] cloning repository https://github.com/exphp-share/rust-sols
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/exphp-share/rust-sols" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexphp-share%2Frust-sols", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexphp-share%2Frust-sols'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bfd91187e759a56f8b38063e0066568773729df3
[INFO] testing exphp-share/rust-sols against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexphp-share%2Frust-sols" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/exphp-share/rust-sols on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/exphp-share/rust-sols
[INFO] finished tweaking git repo https://github.com/exphp-share/rust-sols
[INFO] tweaked toml for git repo https://github.com/exphp-share/rust-sols written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/exphp-share/rust-sols already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 515f0af1991bafee8e88a628c8e083e48b80ad62349e700aebb581430a4c58a9
[INFO] running `Command { std: "docker" "start" "-a" "515f0af1991bafee8e88a628c8e083e48b80ad62349e700aebb581430a4c58a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "515f0af1991bafee8e88a628c8e083e48b80ad62349e700aebb581430a4c58a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "515f0af1991bafee8e88a628c8e083e48b80ad62349e700aebb581430a4c58a9", kill_on_drop: false }`
[INFO] [stdout] 515f0af1991bafee8e88a628c8e083e48b80ad62349e700aebb581430a4c58a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa799fdf5b6f87678269b2cd013cd1f5678420fc4c2a38010066e535732808ff
[INFO] running `Command { std: "docker" "start" "-a" "aa799fdf5b6f87678269b2cd013cd1f5678420fc4c2a38010066e535732808ff", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling serde v1.0.69
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling itoa v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]    Compiling serde_derive v1.0.69
[INFO] [stderr]    Compiling serde_json v1.0.22
[INFO] [stderr]    Compiling all-pats v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> bins/test-ac.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> bins/test-bc.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> bins/pq.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iterator_step_by)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> bins/pqk.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `isqrt`
[INFO] [stdout]  --> bins/pqk.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 | use all_pats::{isqrt, gcd, qsqrt};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::std::collections::HashMap`
[INFO] [stdout]   --> bins/pqk.rs:66:7
[INFO] [stdout]    |
[INFO] [stdout] 66 |   use ::std::collections::HashMap;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `all-pats`
[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] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> bins/pqk.rs:264:9
[INFO] [stdout]     |
[INFO] [stdout] 264 |     let a = vec![()];
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> bins/pq.rs:30:14
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn letter_2((a,b,c): (i64,i64,i64)) -> char {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> bins/pq.rs:125:54
[INFO] [stdout]     |
[INFO] [stdout] 125 |   for ((a, b, c), value) in map.into_iter().filter(|(k,v)| v.is_none()) {
[INFO] [stdout]     |                                                      ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> bins/pq.rs:125:19
[INFO] [stdout]     |
[INFO] [stdout] 125 |   for ((a, b, c), value) in map.into_iter().filter(|(k,v)| v.is_none()) {
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `c` as mutable, as it is not declared as mutable
[INFO] [stdout]    --> bins/pqk.rs:272:9
[INFO] [stdout]     |
[INFO] [stdout] 219 |         $crate::CallHelper(($($ident),*)).call(|$($ident),*| $body)
[INFO] [stdout]     |                                                   ------ help: consider changing this to be mutable: `mut c`
[INFO] [stdout] ...
[INFO] [stdout] 272 |         c.sort(); // c is Vec<()>. It was moved.
[INFO] [stdout]     |         ^ cannot borrow as mutable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> bins/pqk.rs:266:9
[INFO] [stdout]     |
[INFO] [stdout] 266 |     let mut c = vec![()];
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> bins/pqk.rs:171:26
[INFO] [stdout]     |
[INFO] [stdout] 171 |                   pat: [$a $ident]
[INFO] [stdout]     |                            ^^^^^^ help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 270 | /     using!{[b, mut c, ref d, ref mut e] {
[INFO] [stdout] 271 | |         let _ = b; // b is Vec<()>. It was moved.
[INFO] [stdout] 272 | |         c.sort(); // c is Vec<()>. It was moved.
[INFO] [stdout] 273 | |         let _ = d.iter(); // d is &Vec<()>
[INFO] [stdout] 274 | |         let _ = e.iter_mut(); // e is &mut Vec<()>
[INFO] [stdout] 275 | |         // let _ = a.iter(); // a cannot be used.
[INFO] [stdout] 276 | |     }}
[INFO] [stdout]     | |______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `_using_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "aa799fdf5b6f87678269b2cd013cd1f5678420fc4c2a38010066e535732808ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa799fdf5b6f87678269b2cd013cd1f5678420fc4c2a38010066e535732808ff", kill_on_drop: false }`
[INFO] [stdout] aa799fdf5b6f87678269b2cd013cd1f5678420fc4c2a38010066e535732808ff
