[INFO] updating cached repository Reconcyl/flobnar
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Reconcyl/flobnar
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Reconcyl/flobnar" "work/ex/beta-1.38-1/sources/1.37.0/gh/Reconcyl/flobnar"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Reconcyl/flobnar'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Reconcyl/flobnar" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Reconcyl/flobnar"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Reconcyl/flobnar'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 964a4771fd1ab215ff8d004571a7a838511371fa
[INFO] sha for GitHub repo Reconcyl/flobnar: 964a4771fd1ab215ff8d004571a7a838511371fa
[INFO] validating manifest of Reconcyl/flobnar 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 Reconcyl/flobnar 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 Reconcyl/flobnar
[INFO] finished frobbing Reconcyl/flobnar
[INFO] frobbed toml for Reconcyl/flobnar written to work/ex/beta-1.38-1/sources/1.37.0/gh/Reconcyl/flobnar/Cargo.toml
[INFO] started frobbing Reconcyl/flobnar
[INFO] finished frobbing Reconcyl/flobnar
[INFO] frobbed toml for Reconcyl/flobnar written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Reconcyl/flobnar/Cargo.toml
[INFO] crate Reconcyl/flobnar 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 Reconcyl/flobnar 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-0/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/Reconcyl/flobnar:/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] adfd888d35f7b92fd1e6a182f121da79a96a81aaeb154a8b4530f6e61c796383
[INFO] running `"docker" "start" "-a" "adfd888d35f7b92fd1e6a182f121da79a96a81aaeb154a8b4530f6e61c796383"`
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling flobnar v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stderr]  --> src/interpret.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::boxed::FnBox;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(fnbox)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `Rand` is never used
[INFO] [stderr]    --> src/interpret.rs:118:21
[INFO] [stderr]     |
[INFO] [stderr] 118 | enum EvalTrampoline<Rand, R, W> {
[INFO] [stderr]     |                     ^^^^ unused parameter
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing `Rand` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `R` is never used
[INFO] [stderr]    --> src/interpret.rs:118:27
[INFO] [stderr]     |
[INFO] [stderr] 118 | enum EvalTrampoline<Rand, R, W> {
[INFO] [stderr]     |                           ^ unused parameter
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing `R` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `W` is never used
[INFO] [stderr]    --> src/interpret.rs:118:30
[INFO] [stderr]     |
[INFO] [stderr] 118 | enum EvalTrampoline<Rand, R, W> {
[INFO] [stderr]     |                              ^ unused parameter
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing `W` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `Rand` is never used
[INFO] [stderr]    --> src/interpret.rs:617:19
[INFO] [stderr]     |
[INFO] [stderr] 617 |         enum Task<Rand, R, W> {
[INFO] [stderr]     |                   ^^^^ unused parameter
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing `Rand` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `R` is never used
[INFO] [stderr]    --> src/interpret.rs:617:25
[INFO] [stderr]     |
[INFO] [stderr] 617 |         enum Task<Rand, R, W> {
[INFO] [stderr]     |                         ^ unused parameter
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing `R` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `W` is never used
[INFO] [stderr]    --> src/interpret.rs:617:28
[INFO] [stderr]     |
[INFO] [stderr] 617 |         enum Task<Rand, R, W> {
[INFO] [stderr]     |                            ^ unused parameter
[INFO] [stderr]     |
[INFO] [stderr]     = help: consider removing `W` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 8 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0392, E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0392`.
[INFO] [stderr] error: Could not compile `flobnar`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "adfd888d35f7b92fd1e6a182f121da79a96a81aaeb154a8b4530f6e61c796383"`
[INFO] running `"docker" "rm" "-f" "adfd888d35f7b92fd1e6a182f121da79a96a81aaeb154a8b4530f6e61c796383"`
[INFO] [stdout] adfd888d35f7b92fd1e6a182f121da79a96a81aaeb154a8b4530f6e61c796383