[INFO] fetching crate mars2 0.1.0...
[INFO] documenting mars2-0.1.0 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate mars2 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate mars2 0.1.0 on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mars2 0.1.0
[INFO] finished tweaking crates.io crate mars2 0.1.0
[INFO] tweaked toml for crates.io crate mars2 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded extra v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b013dcc9a94669bce3cc7250c3e3ef382026de5cc9f55e3ce5dff6a457072898
[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" "b013dcc9a94669bce3cc7250c3e3ef382026de5cc9f55e3ce5dff6a457072898", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b013dcc9a94669bce3cc7250c3e3ef382026de5cc9f55e3ce5dff6a457072898", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b013dcc9a94669bce3cc7250c3e3ef382026de5cc9f55e3ce5dff6a457072898", kill_on_drop: false }`
[INFO] [stdout] b013dcc9a94669bce3cc7250c3e3ef382026de5cc9f55e3ce5dff6a457072898
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "RUSTDOCFLAGS=--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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 133b288674501cafd4d95cbe75aa22a3ee9c15bb211bf96748d988afc398f6ce
[INFO] running `Command { std: "docker" "start" "-a" "133b288674501cafd4d95cbe75aa22a3ee9c15bb211bf96748d988afc398f6ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]     Checking bytes v0.5.5
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling aster v0.27.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking pin-project-lite v0.1.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking tinyvec v0.3.3
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/aster-0.27.0/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_codegen v0.8.9
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aster`.
[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" "133b288674501cafd4d95cbe75aa22a3ee9c15bb211bf96748d988afc398f6ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "133b288674501cafd4d95cbe75aa22a3ee9c15bb211bf96748d988afc398f6ce", kill_on_drop: false }`
[INFO] [stdout] 133b288674501cafd4d95cbe75aa22a3ee9c15bb211bf96748d988afc398f6ce