[INFO] updating cached repository yuraxdrumz/rust-tutorial
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yuraxdrumz/rust-tutorial
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yuraxdrumz/rust-tutorial" "work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/yuraxdrumz/rust-tutorial"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/yuraxdrumz/rust-tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yuraxdrumz/rust-tutorial" "work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/yuraxdrumz/rust-tutorial"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/yuraxdrumz/rust-tutorial'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4d79ac2163610bf902270ae5b2ca83cace149e18
[INFO] sha for GitHub repo yuraxdrumz/rust-tutorial: 4d79ac2163610bf902270ae5b2ca83cace149e18
[INFO] validating manifest of yuraxdrumz/rust-tutorial on toolchain master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of yuraxdrumz/rust-tutorial on toolchain try#29640c57b5f92febba0e40c50cb863c9a7ede51d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing yuraxdrumz/rust-tutorial
[INFO] finished frobbing yuraxdrumz/rust-tutorial
[INFO] frobbed toml for yuraxdrumz/rust-tutorial written to work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/yuraxdrumz/rust-tutorial/Cargo.toml
[INFO] started frobbing yuraxdrumz/rust-tutorial
[INFO] finished frobbing yuraxdrumz/rust-tutorial
[INFO] frobbed toml for yuraxdrumz/rust-tutorial written to work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/yuraxdrumz/rust-tutorial/Cargo.toml
[INFO] crate yuraxdrumz/rust-tutorial has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking yuraxdrumz/rust-tutorial against master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039 for pr-57745
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57745/worker-2/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/yuraxdrumz/rust-tutorial:/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" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 89fd0e250f47e8115857eeacdfe0ac3f3c768e5ee5cf0162863290259edfc370
[INFO] running `"docker" "start" "-a" "89fd0e250f47e8115857eeacdfe0ac3f3c768e5ee5cf0162863290259edfc370"`
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling cfg-if v0.1.5
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling yansi v0.4.0
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]    Compiling untrusted v0.5.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling byteorder v1.2.6
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]     Checking indexmap v1.0.1
[INFO] [stderr]     Checking utf8-ranges v1.0.1
[INFO] [stderr]    Compiling safemem v0.3.0
[INFO] [stderr]     Checking ordermap v0.2.13
[INFO] [stderr]     Checking try_from v0.2.2
[INFO] [stderr]     Checking pear v0.0.20
[INFO] [stderr]    Compiling state v0.4.1
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking md5 v0.3.8
[INFO] [stderr]     Checking data-encoding v2.1.1
[INFO] [stderr]     Checking separator v0.3.1
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling log v0.4.5
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking isatty v0.1.9
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling pear_codegen v0.0.20
[INFO] [stderr]    Compiling rocket v0.3.17
[INFO] [stderr]    Compiling rocket_codegen v0.3.17
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking semver v0.8.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]     Checking memchr v2.1.0
[INFO] [stderr]     Checking url v1.7.1
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]    Compiling syn v0.15.9
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr] error[E0599]: no variant named `concat` found for type `syntax::tokenstream::TokenStream` in the current scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.20/src/lib.rs:330:67
[INFO] [stderr]     |
[INFO] [stderr] 330 |                 mac.node.tts = ThinTokenStream::from(TokenStream::concat(streams));
[INFO] [stderr]     |                                                      -------------^^^^^^
[INFO] [stderr]     |                                                      |
[INFO] [stderr]     |                                                      variant not found in `syntax::tokenstream::TokenStream`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `pear_codegen`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "89fd0e250f47e8115857eeacdfe0ac3f3c768e5ee5cf0162863290259edfc370"`
[INFO] running `"docker" "rm" "-f" "89fd0e250f47e8115857eeacdfe0ac3f3c768e5ee5cf0162863290259edfc370"`
[INFO] [stdout] 89fd0e250f47e8115857eeacdfe0ac3f3c768e5ee5cf0162863290259edfc370