[INFO] updating cached repository nelhage/feature-in-mod
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nelhage/feature-in-mod
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nelhage/feature-in-mod" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/nelhage/feature-in-mod"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/nelhage/feature-in-mod'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nelhage/feature-in-mod" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/nelhage/feature-in-mod"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/nelhage/feature-in-mod'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ceb2d2e6646635f5161c3a99739889e4d0092eef
[INFO] sha for GitHub repo nelhage/feature-in-mod: ceb2d2e6646635f5161c3a99739889e4d0092eef
[INFO] validating manifest of nelhage/feature-in-mod on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nelhage/feature-in-mod on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing nelhage/feature-in-mod
[INFO] finished frobbing nelhage/feature-in-mod
[INFO] frobbed toml for nelhage/feature-in-mod written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/nelhage/feature-in-mod/Cargo.toml
[INFO] started frobbing nelhage/feature-in-mod
[INFO] finished frobbing nelhage/feature-in-mod
[INFO] frobbed toml for nelhage/feature-in-mod written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/nelhage/feature-in-mod/Cargo.toml
[INFO] crate nelhage/feature-in-mod already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking nelhage/feature-in-mod against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-4/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/nelhage/feature-in-mod:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] edf21d67fdfba00b3fb34aefa023df236cfb752d890c53bd15be9bd792e3606b
[INFO] running `"docker" "start" "-a" "edf21d67fdfba00b3fb34aefa023df236cfb752d890c53bd15be9bd792e3606b"`
[INFO] [stderr]     Checking feature-in-mod v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0658]: box pattern syntax is experimental
[INFO] [stderr]  --> src/transform.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 |         AST::Add(box AST::Add(ll, lr), r) => AST::Add(ll, Box::new(AST::Add(lr, r))),
[INFO] [stderr]   |                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/29641
[INFO] [stderr]   = help: add `#![feature(box_patterns)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: box pattern syntax is experimental
[INFO] [stderr]  --> src/transform.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 |         AST::Add(box AST::Add(ll, lr), r) => AST::Add(ll, Box::new(AST::Add(lr, r))),
[INFO] [stderr]   |                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/29641
[INFO] [stderr]   = help: add `#![feature(box_patterns)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: Could not compile `feature-in-mod`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: Could not compile `feature-in-mod`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "edf21d67fdfba00b3fb34aefa023df236cfb752d890c53bd15be9bd792e3606b"`
[INFO] running `"docker" "rm" "-f" "edf21d67fdfba00b3fb34aefa023df236cfb752d890c53bd15be9bd792e3606b"`
[INFO] [stdout] edf21d67fdfba00b3fb34aefa023df236cfb752d890c53bd15be9bd792e3606b