[INFO] updating cached repository tcr/dirmanifest
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tcr/dirmanifest
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tcr/dirmanifest" "work/ex/beta-1.38-1/sources/1.37.0/gh/tcr/dirmanifest"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/tcr/dirmanifest'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tcr/dirmanifest" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tcr/dirmanifest"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tcr/dirmanifest'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7c0c34907cd77988907203875ef2bd6441d56bdd
[INFO] sha for GitHub repo tcr/dirmanifest: 7c0c34907cd77988907203875ef2bd6441d56bdd
[INFO] validating manifest of tcr/dirmanifest 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 tcr/dirmanifest 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 tcr/dirmanifest
[INFO] finished frobbing tcr/dirmanifest
[INFO] frobbed toml for tcr/dirmanifest written to work/ex/beta-1.38-1/sources/1.37.0/gh/tcr/dirmanifest/Cargo.toml
[INFO] started frobbing tcr/dirmanifest
[INFO] finished frobbing tcr/dirmanifest
[INFO] frobbed toml for tcr/dirmanifest written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tcr/dirmanifest/Cargo.toml
[INFO] crate tcr/dirmanifest 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tcr/dirmanifest/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 tcr/dirmanifest 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-2/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/tcr/dirmanifest:/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] 0666e14e632f3ca25998c576b65e793978aeb7c17e4424400bdf88a0e533270e
[INFO] running `"docker" "start" "-a" "0666e14e632f3ca25998c576b65e793978aeb7c17e4424400bdf88a0e533270e"`
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling bstr v0.2.7
[INFO] [stderr]    Compiling regex v1.2.1
[INFO] [stderr]    Compiling csv v1.1.1
[INFO] [stderr]    Compiling globset v0.4.4
[INFO] [stderr]    Compiling ignore v0.4.10
[INFO] [stderr]    Compiling dirmanifest v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:28:19
[INFO] [stderr]    |
[INFO] [stderr] 28 |         while let Some(Some(item)) = rx.recv() {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^   --------- this match expression has type `std::result::Result<std::option::Option<(std::string::String, u64)>, crossbeam_channel::RecvError>`
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   expected enum `std::result::Result`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::result::Result<std::option::Option<(std::string::String, u64)>, crossbeam_channel::RecvError>`
[INFO] [stderr]               found type `std::option::Option<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `dirmanifest`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0666e14e632f3ca25998c576b65e793978aeb7c17e4424400bdf88a0e533270e"`
[INFO] running `"docker" "rm" "-f" "0666e14e632f3ca25998c576b65e793978aeb7c17e4424400bdf88a0e533270e"`
[INFO] [stdout] 0666e14e632f3ca25998c576b65e793978aeb7c17e4424400bdf88a0e533270e