[INFO] cloning repository https://github.com/davidbarsky/nonlinear-macro-expansion
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidbarsky/nonlinear-macro-expansion" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidbarsky%2Fnonlinear-macro-expansion", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidbarsky%2Fnonlinear-macro-expansion'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e66eb3c261a3f5b1069f4a84ab629298f6054856
[INFO] building davidbarsky/nonlinear-macro-expansion against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidbarsky%2Fnonlinear-macro-expansion" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidbarsky/nonlinear-macro-expansion on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/davidbarsky/nonlinear-macro-expansion
[INFO] finished tweaking git repo https://github.com/davidbarsky/nonlinear-macro-expansion
[INFO] tweaked toml for git repo https://github.com/davidbarsky/nonlinear-macro-expansion written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/davidbarsky/nonlinear-macro-expansion 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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbc9d4891978587d144f5a6ede7819ea38e6cceb37df9b1600f9bca9850d2841
[INFO] running `Command { std: "docker" "start" "-a" "fbc9d4891978587d144f5a6ede7819ea38e6cceb37df9b1600f9bca9850d2841", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbc9d4891978587d144f5a6ede7819ea38e6cceb37df9b1600f9bca9850d2841", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbc9d4891978587d144f5a6ede7819ea38e6cceb37df9b1600f9bca9850d2841", kill_on_drop: false }`
[INFO] [stdout] fbc9d4891978587d144f5a6ede7819ea38e6cceb37df9b1600f9bca9850d2841
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c908c7c36d8448f2a1f1019ea2c73f5df93b3597ef0b1d4ab2ac96dbcc4fa87
[INFO] running `Command { std: "docker" "start" "-a" "6c908c7c36d8448f2a1f1019ea2c73f5df93b3597ef0b1d4ab2ac96dbcc4fa87", kill_on_drop: false }`
[INFO] [stderr]    Compiling is-non-linear v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: recursion limit reached while expanding `count_tts!`
[INFO] [stdout]     --> src/lib.rs:7:23
[INFO] [stdout]      |
[INFO] [stdout] 7    |           => {20usize + count_tts!($($tail)*)};
[INFO] [stdout]      |                         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3027 |       assert_eq!(700, count_tts!(
[INFO] [stdout]      |  _____________________-
[INFO] [stdout] 3028 | |         ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,,
[INFO] [stdout] 3029 | |         ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,,
[INFO] [stdout] ...    |
[INFO] [stdout] 3413 | |         ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,, ,,,,,,,,,,
[INFO] [stdout] 3414 | |     ));
[INFO] [stdout]      | |_____- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`is_non_linear`)
[INFO] [stdout]      = note: this error originates in the macro `count_tts` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `is-non-linear` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "6c908c7c36d8448f2a1f1019ea2c73f5df93b3597ef0b1d4ab2ac96dbcc4fa87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c908c7c36d8448f2a1f1019ea2c73f5df93b3597ef0b1d4ab2ac96dbcc4fa87", kill_on_drop: false }`
[INFO] [stdout] 6c908c7c36d8448f2a1f1019ea2c73f5df93b3597ef0b1d4ab2ac96dbcc4fa87