[INFO] cloning repository https://github.com/lzt1008/arrowcss
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lzt1008/arrowcss" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flzt1008%2Farrowcss", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flzt1008%2Farrowcss'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e49ad5b889481e263b40685a842dbebc7ac40b9
[INFO] checking lzt1008/arrowcss against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flzt1008%2Farrowcss" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lzt1008/arrowcss on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/lzt1008/arrowcss
[INFO] finished tweaking git repo https://github.com/lzt1008/arrowcss
[INFO] tweaked toml for git repo https://github.com/lzt1008/arrowcss written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/lzt1008/arrowcss 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vlq v0.5.1
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[INFO] [stderr]   Downloaded const-str v0.3.2
[INFO] [stderr]   Downloaded cssparser-color v0.1.0
[INFO] [stderr]   Downloaded cssparser v0.33.0
[INFO] [stderr]   Downloaded parcel_selectors v0.26.4
[INFO] [stderr]   Downloaded simd-abstraction v0.7.1
[INFO] [stderr]   Downloaded base64-simd v0.7.0
[INFO] [stderr]   Downloaded lightningcss v1.0.0-alpha.55
[INFO] [stderr]   Downloaded parcel_sourcemap v2.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d237953c0e8f0c7ff78b38e4544d1ce90ab81b5c263fd643adee8b6af7561d63
[INFO] running `Command { std: "docker" "start" "-a" "d237953c0e8f0c7ff78b38e4544d1ce90ab81b5c263fd643adee8b6af7561d63", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 169ec1af198fa1ff27ce233aba4c99d1e941391ae9ffe4ba0ced273e3fa2f4cb
[INFO] running `Command { std: "docker" "start" "-a" "169ec1af198fa1ff27ce233aba4c99d1e941391ae9ffe4ba0ced273e3fa2f4cb", kill_on_drop: false }`
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[INFO] [stdout] warning: unused imports: `cell::RefCell`, `sync::Arc`
[INFO] [stdout]  --> crates/arrowcss/src/context/static_rules.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{cell::RefCell, sync::Arc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smallvec::smallvec`
[INFO] [stdout]  --> crates/arrowcss/src/css/rule.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use smallvec::smallvec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `cell::RefCell`, `sync::Arc`
[INFO] [stdout]  --> crates/arrowcss/src/context/static_rules.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{cell::RefCell, sync::Arc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::css`
[INFO] [stdout]   --> crates/arrowcss/src/context/utilities.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     use crate::css;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> crates/arrowcss/src/context/utilities.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smallvec::smallvec`
[INFO] [stdout]    --> crates/arrowcss/src/css/decl.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 160 |     use smallvec::smallvec;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smallvec::smallvec`
[INFO] [stdout]  --> crates/arrowcss/src/css/rule.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use smallvec::smallvec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]    --> crates/arrowcss/src/utils.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let m = matcher.get(1..)?.to_owned();
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fns`
[INFO] [stdout]    --> crates/arrowcss/src/utils.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |     let fns = matcher
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_fns`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> crates/arrowcss/src/variant.rs:216:20
[INFO] [stdout]     |
[INFO] [stdout] 216 |                 Ok(token) => {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> crates/arrowcss/src/rule.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl MetaData {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 17 |     pub(crate) fn new(raw: &str) -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]    --> crates/arrowcss/src/utils.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let m = matcher.get(1..)?.to_owned();
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fns`
[INFO] [stdout]    --> crates/arrowcss/src/utils.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |     let fns = matcher
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_fns`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> crates/arrowcss/src/variant.rs:216:20
[INFO] [stdout]     |
[INFO] [stdout] 216 |                 Ok(token) => {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> crates/arrowcss/src/rule.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl MetaData {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 17 |     pub(crate) fn new(raw: &str) -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 14s
[INFO] running `Command { std: "docker" "inspect" "169ec1af198fa1ff27ce233aba4c99d1e941391ae9ffe4ba0ced273e3fa2f4cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "169ec1af198fa1ff27ce233aba4c99d1e941391ae9ffe4ba0ced273e3fa2f4cb", kill_on_drop: false }`
[INFO] [stdout] 169ec1af198fa1ff27ce233aba4c99d1e941391ae9ffe4ba0ced273e3fa2f4cb