[INFO] updating cached repository yuvadm/slingr
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yuvadm/slingr
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yuvadm/slingr" "work/ex/beta-1.38-1/sources/1.37.0/gh/yuvadm/slingr"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/yuvadm/slingr'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yuvadm/slingr" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yuvadm/slingr"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yuvadm/slingr'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bf1de3d81d5bdf782edbb6bf35f7cf66691a3c47
[INFO] sha for GitHub repo yuvadm/slingr: bf1de3d81d5bdf782edbb6bf35f7cf66691a3c47
[INFO] validating manifest of yuvadm/slingr on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of yuvadm/slingr on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing yuvadm/slingr
[INFO] finished frobbing yuvadm/slingr
[INFO] frobbed toml for yuvadm/slingr written to work/ex/beta-1.38-1/sources/1.37.0/gh/yuvadm/slingr/Cargo.toml
[INFO] started frobbing yuvadm/slingr
[INFO] finished frobbing yuvadm/slingr
[INFO] frobbed toml for yuvadm/slingr written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yuvadm/slingr/Cargo.toml
[INFO] crate yuvadm/slingr already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing yuvadm/slingr against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yuvadm/slingr:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] f8faaca0368b07c4448b09be5ce6073a9ed49b8fd2109e4b2d78ab37829f4f27
[INFO] running `"docker" "start" "-a" "f8faaca0368b07c4448b09be5ce6073a9ed49b8fd2109e4b2d78ab37829f4f27"`
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling lazy_static v1.0.1
[INFO] [stderr]    Compiling futures v0.1.22
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.0
[INFO] [stderr]    Compiling itoa v0.4.2
[INFO] [stderr]    Compiling unindent v0.1.3
[INFO] [stderr]    Compiling regex v1.0.1
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling termios v0.3.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling regex-syntax v0.6.1
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling bytes v0.4.8
[INFO] [stderr]    Compiling aho-corasick v0.6.5
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling proc-macro-hack v0.4.0
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.3
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling mio v0.6.15
[INFO] [stderr]    Compiling http v0.1.7
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]    Compiling crossbeam-deque v0.3.1
[INFO] [stderr]    Compiling tokio-executor v0.1.2
[INFO] [stderr]    Compiling tokio-io v0.1.7
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling want v0.0.6
[INFO] [stderr]    Compiling tokio-threadpool v0.1.5
[INFO] [stderr]    Compiling tokio-timer v0.2.4
[INFO] [stderr]    Compiling tokio-reactor v0.1.2
[INFO] [stderr]    Compiling tokio-codec v0.1.0
[INFO] [stderr]    Compiling tokio-fs v0.1.2
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio-udp v0.1.1
[INFO] [stderr]    Compiling h2 v0.1.10
[INFO] [stderr]    Compiling tokio v0.1.7
[INFO] [stderr]    Compiling indoc-impl v0.2.6
[INFO] [stderr]    Compiling indoc v0.2.6
[INFO] [stderr] error: proc-macro derive panicked
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/indoc-0.2.6/src/lib.rs:125:1
[INFO] [stderr]     |
[INFO] [stderr] 125 | / proc_macro_expr_decl! {
[INFO] [stderr] 126 | |     #[doc(hidden)]
[INFO] [stderr] 127 | |     indoc! => indoc_impl
[INFO] [stderr] 128 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = help: message: assertion failed: `(left == right)`
[INFO] [stderr]               left: `Some("#[allow(unused,")`,
[INFO] [stderr]              right: `Some("#[allow(unused")`
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `indoc`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "f8faaca0368b07c4448b09be5ce6073a9ed49b8fd2109e4b2d78ab37829f4f27"`
[INFO] running `"docker" "rm" "-f" "f8faaca0368b07c4448b09be5ce6073a9ed49b8fd2109e4b2d78ab37829f4f27"`
[INFO] [stdout] f8faaca0368b07c4448b09be5ce6073a9ed49b8fd2109e4b2d78ab37829f4f27