[INFO] updating cached repository dannyow/reMarkable-fractals
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dannyow/reMarkable-fractals
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dannyow/reMarkable-fractals" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/dannyow/reMarkable-fractals"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/dannyow/reMarkable-fractals'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dannyow/reMarkable-fractals" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/dannyow/reMarkable-fractals"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/dannyow/reMarkable-fractals'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7931882c15dc16c68736d0261999ee7cadbb4322
[INFO] sha for GitHub repo dannyow/reMarkable-fractals: 7931882c15dc16c68736d0261999ee7cadbb4322
[INFO] validating manifest of dannyow/reMarkable-fractals on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dannyow/reMarkable-fractals on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dannyow/reMarkable-fractals
[INFO] finished frobbing dannyow/reMarkable-fractals
[INFO] frobbed toml for dannyow/reMarkable-fractals written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/dannyow/reMarkable-fractals/Cargo.toml
[INFO] started frobbing dannyow/reMarkable-fractals
[INFO] finished frobbing dannyow/reMarkable-fractals
[INFO] frobbed toml for dannyow/reMarkable-fractals written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/dannyow/reMarkable-fractals/Cargo.toml
[INFO] crate dannyow/reMarkable-fractals already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-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 dannyow/reMarkable-fractals against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-4/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/dannyow/reMarkable-fractals:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b029528ff37a46455ffe56b865f67836d634dacc2e338d9aa788882f768a029d
[INFO] running `"docker" "start" "-a" "b029528ff37a46455ffe56b865f67836d634dacc2e338d9aa788882f768a029d"`
[INFO] [stderr]     Checking ioctl-gen v0.1.1
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling lua52-sys v0.1.1
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking stb_truetype v0.2.2
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking aabb-quadtree v0.1.0
[INFO] [stderr]     Checking epoll v3.1.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking num-bigint v0.1.43
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking ordered-float v0.5.0
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking mmap v0.1.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rusttype v0.4.3
[INFO] [stderr]     Checking regex v0.2.10
[INFO] [stderr]     Checking rayon-core v1.4.0
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]     Checking env_logger v0.5.9
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking evdev v0.10.1
[INFO] [stderr]     Checking hlua v0.4.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.14
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking libremarkable v0.1.25
[INFO] [stderr] error[E0635]: unknown feature `const_size_of`
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/libremarkable-0.1.25/src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(const_size_of)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0635`.
[INFO] [stderr] error: Could not compile `libremarkable`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b029528ff37a46455ffe56b865f67836d634dacc2e338d9aa788882f768a029d"`
[INFO] running `"docker" "rm" "-f" "b029528ff37a46455ffe56b865f67836d634dacc2e338d9aa788882f768a029d"`
[INFO] [stdout] b029528ff37a46455ffe56b865f67836d634dacc2e338d9aa788882f768a029d