[INFO] updating cached repository pop-os/upgrade
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pop-os/upgrade
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pop-os/upgrade" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/pop-os/upgrade"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/pop-os/upgrade'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pop-os/upgrade" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/pop-os/upgrade"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/pop-os/upgrade'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 14683a35557775546079f9df55c2ee16a8cac914
[INFO] sha for GitHub repo pop-os/upgrade: 14683a35557775546079f9df55c2ee16a8cac914
[INFO] validating manifest of pop-os/upgrade on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of pop-os/upgrade on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing pop-os/upgrade
[INFO] finished frobbing pop-os/upgrade
[INFO] frobbed toml for pop-os/upgrade written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/pop-os/upgrade/Cargo.toml
[INFO] started frobbing pop-os/upgrade
[INFO] finished frobbing pop-os/upgrade
[INFO] frobbed toml for pop-os/upgrade written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/pop-os/upgrade/Cargo.toml
[INFO] crate pop-os/upgrade already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking pop-os/upgrade against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-1/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/pop-os/upgrade:/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" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c1fd03afac01e7a54aa584114daa08a07bec46e1d8bbc0ec61fdece7fc2e23a8
[INFO] running `"docker" "start" "-a" "c1fd03afac01e7a54aa584114daa08a07bec46e1d8bbc0ec61fdece7fc2e23a8"`
[INFO] [stderr]    Compiling openssl v0.10.22
[INFO] [stderr]     Checking numtoa v0.2.3
[INFO] [stderr]     Checking iowrap v0.1.2
[INFO] [stderr]     Checking hex-view v0.1.2
[INFO] [stderr]     Checking cascade v0.1.3
[INFO] [stderr]     Checking deb-architectures v0.1.0
[INFO] [stderr]     Checking distinst-bootloader v0.1.0 (https://github.com/pop-os/distinst/#45fd73ee)
[INFO] [stderr]     Checking progress-streams v1.0.0
[INFO] [stderr]     Checking exit-status-ext v0.1.0 (https://github.com/pop-os/exit-status-ext#46700735)
[INFO] [stderr]     Checking atomic v0.4.4
[INFO] [stderr]    Compiling backtrace v0.3.16
[INFO] [stderr]     Checking os-release v0.1.0
[INFO] [stderr]    Compiling lz4-sys v1.8.3
[INFO] [stderr]    Compiling openssl-sys v0.9.46
[INFO] [stderr]    Compiling lzma-sys v0.1.14
[INFO] [stderr]     Checking snailquote v0.2.0
[INFO] [stderr]    Compiling serde v1.0.91
[INFO] [stderr]     Checking sysfs-class v0.1.1 (https://github.com/pop-os/sysfs-class#7bc914e0)
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking fern v0.5.8
[INFO] [stderr]    Compiling syntex_errors v0.58.1
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking errno v0.2.4
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking filetime v0.2.5
[INFO] [stderr]     Checking apt-cli-wrappers v0.1.0 (https://github.com/pop-os/apt-cli-wrappers#cefd7b61)
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]    Compiling clang-sys v0.19.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking envfile v0.2.1
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]     Checking loopdev v0.2.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling syntex_syntax v0.58.1
[INFO] [stderr]     Checking crossbeam-deque v0.5.2
[INFO] [stderr] error[E0423]: expected function, found struct `ast::Name`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/syntex_syntax-0.58.1/src/symbol.rs:146:27
[INFO] [stderr]     |
[INFO] [stderr] 146 |                       name: ast::Name($index),
[INFO] [stderr]     |                             ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 165 | / declare_keywords! {
[INFO] [stderr] 166 | |     // Invalid identifier
[INFO] [stderr] 167 | |     (0,  Invalid,        "")
[INFO] [stderr] 168 | |
[INFO] [stderr] ...   |
[INFO] [stderr] 231 | |     (56, CrateRoot, "{{root}}")
[INFO] [stderr] 232 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr]     Checking dbus v0.6.4
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking cookie v0.11.1
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking miniz_oxide_c_api v0.2.1
[INFO] [stderr]     Checking http v0.1.17
[INFO] [stderr]     Checking sys-mount v1.2.0
[INFO] [stderr]     Checking tempfile v3.0.7
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking sedregex v0.1.1
[INFO] [stderr]    Compiling derive-new v0.5.6
[INFO] [stderr]    Compiling smart-default v0.3.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking tokio-threadpool v0.1.14
[INFO] [stderr]     Checking crossbeam v0.7.1
[INFO] [stderr]    Compiling cexpr v0.2.3
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0423`.
[INFO] [stderr] error: Could not compile `syntex_syntax`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "c1fd03afac01e7a54aa584114daa08a07bec46e1d8bbc0ec61fdece7fc2e23a8"`
[INFO] running `"docker" "rm" "-f" "c1fd03afac01e7a54aa584114daa08a07bec46e1d8bbc0ec61fdece7fc2e23a8"`
[INFO] [stdout] c1fd03afac01e7a54aa584114daa08a07bec46e1d8bbc0ec61fdece7fc2e23a8