[INFO] fetching crate css 0.0.22...
[INFO] testing css-0.0.22 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate css 0.0.22 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate css 0.0.22 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate css 0.0.22
[INFO] finished tweaking crates.io crate css 0.0.22
[INFO] tweaked toml for crates.io crate css 0.0.22 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 12e75b7980c0862bd9c7036373142b60e05b836b8e2aebfc7bc7c07f2d60e644
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "12e75b7980c0862bd9c7036373142b60e05b836b8e2aebfc7bc7c07f2d60e644", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12e75b7980c0862bd9c7036373142b60e05b836b8e2aebfc7bc7c07f2d60e644", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12e75b7980c0862bd9c7036373142b60e05b836b8e2aebfc7bc7c07f2d60e644", kill_on_drop: false }`
[INFO] [stdout] 12e75b7980c0862bd9c7036373142b60e05b836b8e2aebfc7bc7c07f2d60e644
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ccc424e24e81bf3a7e66bb0a8e6b99d50b9ae6d7ffdac3048bdcf425cbff8ab
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3ccc424e24e81bf3a7e66bb0a8e6b99d50b9ae6d7ffdac3048bdcf425cbff8ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling smallvec v0.4.5
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling ordermap v0.2.13
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling cssparser v0.21.3
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling cssparser-macros v0.3.6
[INFO] [stderr]    Compiling css v0.0.22 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0506]: cannot assign to `self.input.cached_token` because it is borrowed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cssparser-0.21.3/src/parser.rs:450:17
[INFO] [stdout]     |
[INFO] [stdout] 426 |     pub fn next_including_whitespace_and_comments(&mut self) -> Result<&Token<'i>, BasicParseError<'i>> {
[INFO] [stdout]     |                                                   - let's call the lifetime of this reference `'1`
[INFO] [stdout] ...
[INFO] [stdout] 439 |             Some(ref cached_token)
[INFO] [stdout]     |                  ---------------- borrow of `self.input.cached_token` occurs here
[INFO] [stdout] ...
[INFO] [stdout] 450 |                 self.input.cached_token = Some(CachedToken {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.input.cached_token` occurs here
[INFO] [stdout] ...
[INFO] [stdout] 462 |         Ok(token)
[INFO] [stdout]     |         --------- returning this value requires that `self.input.cached_token.0` is borrowed for `'1`
[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 E0506`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cssparser` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3ccc424e24e81bf3a7e66bb0a8e6b99d50b9ae6d7ffdac3048bdcf425cbff8ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ccc424e24e81bf3a7e66bb0a8e6b99d50b9ae6d7ffdac3048bdcf425cbff8ab", kill_on_drop: false }`
[INFO] [stdout] 3ccc424e24e81bf3a7e66bb0a8e6b99d50b9ae6d7ffdac3048bdcf425cbff8ab