[INFO] crate minimad 0.4.3 is already in cache
[INFO] checking minimad-0.4.3 against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] extracting crate minimad 0.4.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate minimad 0.4.3 on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate minimad 0.4.3
[INFO] finished tweaking crates.io crate minimad 0.4.3
[INFO] tweaked toml for crates.io crate minimad 0.4.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 619ea5f3f61fdbe9b66e2b09a628e7d4754449b6ad527fff1c4877e60ef194fd
[INFO] running `"docker" "start" "-a" "619ea5f3f61fdbe9b66e2b09a628e7d4754449b6ad527fff1c4877e60ef194fd"`
[INFO] [stderr]     Checking minimad v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]  --> src/template.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn add(&mut self, idx: usize) {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arg_idx`
[INFO] [stderr]    --> src/template.rs:95:17
[INFO] [stderr]     |
[INFO] [stderr] 95  |         let mut arg_idx = 0;
[INFO] [stderr]     |                 ^^^^^^^ help: consider prefixing with an underscore: `_arg_idx`
[INFO] [stderr] ...
[INFO] [stderr] 168 |         let composite = mad_inline!("some `code`");
[INFO] [stderr]     |                         -------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `arg_idx` is never read
[INFO] [stderr]    --> src/template.rs:99:13
[INFO] [stderr]     |
[INFO] [stderr] 99  |             arg_idx += 1;
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 180 |         let composite = mad_inline!("**$1:** `$0`", "π*r²", "area");
[INFO] [stderr]     |                         ------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/template.rs:95:13
[INFO] [stderr]     |
[INFO] [stderr] 95  |         let mut arg_idx = 0;
[INFO] [stderr]     |             ----^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 168 |         let composite = mad_inline!("some `code`");
[INFO] [stderr]     |                         -------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/template.rs:96:13
[INFO] [stderr]     |
[INFO] [stderr] 96  |         let mut composite = TEMPLATE.raw_composite();
[INFO] [stderr]     |             ----^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 168 |         let composite = mad_inline!("some `code`");
[INFO] [stderr]     |                         -------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `"docker" "inspect" "619ea5f3f61fdbe9b66e2b09a628e7d4754449b6ad527fff1c4877e60ef194fd"`
[INFO] running `"docker" "rm" "-f" "619ea5f3f61fdbe9b66e2b09a628e7d4754449b6ad527fff1c4877e60ef194fd"`
[INFO] [stdout] 619ea5f3f61fdbe9b66e2b09a628e7d4754449b6ad527fff1c4877e60ef194fd