[INFO] updating cached repository archer884/left-pad
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/archer884/left-pad
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/archer884/left-pad" "work/ex/beta-1.38-1/sources/1.37.0/gh/archer884/left-pad"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/archer884/left-pad'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/archer884/left-pad" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/archer884/left-pad"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/archer884/left-pad'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4625b187e3acd309c1320a829d87cb3c7d0dd5bf
[INFO] sha for GitHub repo archer884/left-pad: 4625b187e3acd309c1320a829d87cb3c7d0dd5bf
[INFO] validating manifest of archer884/left-pad 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 archer884/left-pad 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 archer884/left-pad
[INFO] finished frobbing archer884/left-pad
[INFO] frobbed toml for archer884/left-pad written to work/ex/beta-1.38-1/sources/1.37.0/gh/archer884/left-pad/Cargo.toml
[INFO] started frobbing archer884/left-pad
[INFO] finished frobbing archer884/left-pad
[INFO] frobbed toml for archer884/left-pad written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/archer884/left-pad/Cargo.toml
[INFO] crate archer884/left-pad 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]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/archer884/left-pad/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[INFO] the lockfile is outdated, regenerating it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] 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 archer884/left-pad 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/archer884/left-pad:/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] b9cecf1d32e5521b0e6a2754a7c8089e7778f6b0922bfa93586624b781e2d5e9
[INFO] running `"docker" "start" "-a" "b9cecf1d32e5521b0e6a2754a7c8089e7778f6b0922bfa93586624b781e2d5e9"`
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]    Compiling iron v0.6.1
[INFO] [stderr]    Compiling router v0.6.0
[INFO] [stderr]    Compiling left-pad v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: no rules expected the token `"/"`
[INFO] [stderr]   --> src/main.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         get "/" => help,
[INFO] [stderr]    |             ^^^ no rules expected this token in macro call
[INFO] [stderr] 
[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(box_syntax, question_mark)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'iron::Url::into_generic_url': use `into` from the `Into` trait instead
[INFO] [stderr]   --> src/params.rs:44:29
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let query = url.clone().into_generic_url();
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/params.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |         None => Err(ParamsError::MissingParams),
[INFO] [stderr]    |         ^^^^ expected struct `iron::url::form_urlencoded::Parse`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `iron::url::form_urlencoded::Parse<'_>`
[INFO] [stderr]               found type `std::option::Option<_>`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/params.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |     match query.query_pairs() {
[INFO] [stderr]    |           ------------------- this match expression has type `iron::url::form_urlencoded::Parse<'_>`
[INFO] [stderr] 46 |         None => Err(ParamsError::MissingParams),
[INFO] [stderr] 47 |         Some(query_params) => {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^ expected struct `iron::url::form_urlencoded::Parse`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `iron::url::form_urlencoded::Parse<'_>`
[INFO] [stderr]               found type `std::option::Option<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `left-pad`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b9cecf1d32e5521b0e6a2754a7c8089e7778f6b0922bfa93586624b781e2d5e9"`
[INFO] running `"docker" "rm" "-f" "b9cecf1d32e5521b0e6a2754a7c8089e7778f6b0922bfa93586624b781e2d5e9"`
[INFO] [stdout] b9cecf1d32e5521b0e6a2754a7c8089e7778f6b0922bfa93586624b781e2d5e9