[INFO] updating cached repository ca1ek/example_project
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ca1ek/example_project
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ca1ek/example_project" "work/ex/beta-1.38-1/sources/1.37.0/gh/ca1ek/example_project"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ca1ek/example_project'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ca1ek/example_project" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ca1ek/example_project"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ca1ek/example_project'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bbdd03fad72e621dfff9f33ad032fb7112687bdb
[INFO] sha for GitHub repo ca1ek/example_project: bbdd03fad72e621dfff9f33ad032fb7112687bdb
[INFO] validating manifest of ca1ek/example_project 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 ca1ek/example_project 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 ca1ek/example_project
[INFO] finished frobbing ca1ek/example_project
[INFO] frobbed toml for ca1ek/example_project written to work/ex/beta-1.38-1/sources/1.37.0/gh/ca1ek/example_project/Cargo.toml
[INFO] started frobbing ca1ek/example_project
[INFO] finished frobbing ca1ek/example_project
[INFO] frobbed toml for ca1ek/example_project written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ca1ek/example_project/Cargo.toml
[INFO] crate ca1ek/example_project 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]     Updating git repository `https://github.com/ca1ek/a_web_framework`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ca1ek/example_project/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[INFO] the lockfile is outdated, regenerating it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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/ca1ek/a_web_framework`
[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] [stderr]     Updating git repository `https://github.com/ca1ek/a_web_framework`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing ca1ek/example_project against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ca1ek/example_project:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 9296b90a9e2e37e1fa12800bc9b34a6b20c77864ff6c0a3687ea6db2ad2daeef
[INFO] running `"docker" "start" "-a" "9296b90a9e2e37e1fa12800bc9b34a6b20c77864ff6c0a3687ea6db2ad2daeef"`
[INFO] [stderr]    Compiling linked-hash-map v0.0.9
[INFO] [stderr]    Compiling libsqlite3-sys v0.5.0
[INFO] [stderr]    Compiling lru-cache v0.0.7
[INFO] [stderr]    Compiling rusqlite v0.7.4
[INFO] [stderr]    Compiling a_web_framework v0.1.0 (https://github.com/ca1ek/a_web_framework#f066540c)
[INFO] [stderr]    Compiling example_project v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(panic_handler)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/views.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     HTTPResponse::new(HTTPResponseCodes::Forbidden, "".to_string(), "Heyy".to_string())
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `example_project`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9296b90a9e2e37e1fa12800bc9b34a6b20c77864ff6c0a3687ea6db2ad2daeef"`
[INFO] running `"docker" "rm" "-f" "9296b90a9e2e37e1fa12800bc9b34a6b20c77864ff6c0a3687ea6db2ad2daeef"`
[INFO] [stdout] 9296b90a9e2e37e1fa12800bc9b34a6b20c77864ff6c0a3687ea6db2ad2daeef