[INFO] fetching crate mathml-rs 0.1.1-alpha.2...
[INFO] checking mathml-rs-0.1.1-alpha.2 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate mathml-rs 0.1.1-alpha.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mathml-rs 0.1.1-alpha.2 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mathml-rs 0.1.1-alpha.2
[INFO] finished tweaking crates.io crate mathml-rs 0.1.1-alpha.2
[INFO] tweaked toml for crates.io crate mathml-rs 0.1.1-alpha.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mathml-macros v0.1.1-alpha.2
[INFO] running `Command { std: "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6011c3b929ba106df0b2e893666b4cbcfbc44a713cfd5eafa663a6374c116c80
[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" "6011c3b929ba106df0b2e893666b4cbcfbc44a713cfd5eafa663a6374c116c80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6011c3b929ba106df0b2e893666b4cbcfbc44a713cfd5eafa663a6374c116c80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6011c3b929ba106df0b2e893666b4cbcfbc44a713cfd5eafa663a6374c116c80", kill_on_drop: false }`
[INFO] [stdout] 6011c3b929ba106df0b2e893666b4cbcfbc44a713cfd5eafa663a6374c116c80
[INFO] running `Command { std: "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f34a4b845d1b71f88ecafb6198bdbf143fdd55c6b48b4fe9769d3943c87d2a86
[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" "f34a4b845d1b71f88ecafb6198bdbf143fdd55c6b48b4fe9769d3943c87d2a86", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking quick-xml v0.22.0
[INFO] [stderr]     Checking approx v0.5.0
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/quick-xml-0.22.0/src/events/attributes.rs:362:20
[INFO] [stdout]     |
[INFO] [stdout] 362 |                 }));
[INFO] [stdout]     |                    ^
[INFO] [stdout] ...
[INFO] [stdout] 379 |             None => attr!(self.position..len),
[INFO] [stdout]     |                     ------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `attr` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/quick-xml-0.22.0/src/events/attributes.rs:362:20
[INFO] [stdout]     |
[INFO] [stdout] 362 |                 }));
[INFO] [stdout]     |                    ^
[INFO] [stdout] ...
[INFO] [stdout] 407 |             None => attr!(start_key..len),
[INFO] [stdout]     |                     --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `attr` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/quick-xml-0.22.0/src/events/attributes.rs:362:20
[INFO] [stdout]     |
[INFO] [stdout] 362 |                 }));
[INFO] [stdout]     |                    ^
[INFO] [stdout] ...
[INFO] [stdout] 429 |                         attr!(start_key..end_key, i + 1..j)
[INFO] [stdout]     |                         ----------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `attr` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/quick-xml-0.22.0/src/events/attributes.rs:362:20
[INFO] [stdout]     |
[INFO] [stdout] 362 |                 }));
[INFO] [stdout]     |                    ^
[INFO] [stdout] ...
[INFO] [stdout] 440 |                 attr!(start_key..end_key, i..j)
[INFO] [stdout]     |                 ------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `attr` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/quick-xml-0.22.0/src/events/attributes.rs:362:20
[INFO] [stdout]     |
[INFO] [stdout] 362 |                 }));
[INFO] [stdout]     |                    ^
[INFO] [stdout] ...
[INFO] [stdout] 443 |             None => attr!(start_key..end_key),
[INFO] [stdout]     |                     ------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `attr` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `quick-xml`
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f34a4b845d1b71f88ecafb6198bdbf143fdd55c6b48b4fe9769d3943c87d2a86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f34a4b845d1b71f88ecafb6198bdbf143fdd55c6b48b4fe9769d3943c87d2a86", kill_on_drop: false }`
[INFO] [stdout] f34a4b845d1b71f88ecafb6198bdbf143fdd55c6b48b4fe9769d3943c87d2a86