[INFO] crate ctf 0.1.0 is already in cache
[INFO] extracting crate ctf 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/ctf/0.1.0
[INFO] extracting crate ctf 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ctf/0.1.0
[INFO] validating manifest of ctf-0.1.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ctf-0.1.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ctf-0.1.0
[INFO] finished frobbing ctf-0.1.0
[INFO] frobbed toml for ctf-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/ctf/0.1.0/Cargo.toml
[INFO] started frobbing ctf-0.1.0
[INFO] finished frobbing ctf-0.1.0
[INFO] frobbed toml for ctf-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ctf/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ctf-0.1.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ctf/0.1.0:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] eb039cc49bad0788e43918bd42f437ed6470731dabfc292a546ce26df891b8d5
[INFO] running `"docker" "start" "-a" "eb039cc49bad0788e43918bd42f437ed6470731dabfc292a546ce26df891b8d5"`
[INFO] [stderr]    Compiling ctf v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]  --> src/lib.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let u = model::User { id: 42, handle: String::from("alxbl"), access: 999, assigned: None};
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_u`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `User`
[INFO] [stderr]  --> src/model.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct User {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Challenge`
[INFO] [stderr]  --> src/model.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct Challenge {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Trail`
[INFO] [stderr]   --> src/model.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub enum Trail {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Event`
[INFO] [stderr]   --> src/model.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub struct Event {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `open`
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn open() {
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `"docker" "inspect" "eb039cc49bad0788e43918bd42f437ed6470731dabfc292a546ce26df891b8d5"`
[INFO] running `"docker" "rm" "-f" "eb039cc49bad0788e43918bd42f437ed6470731dabfc292a546ce26df891b8d5"`
[INFO] [stdout] eb039cc49bad0788e43918bd42f437ed6470731dabfc292a546ce26df891b8d5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ctf/0.1.0:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1cb27dc478b84e443a6754655cc44ec90b2b0fd86c9aefb8083dc08567f9e8da
[INFO] running `"docker" "start" "-a" "1cb27dc478b84e443a6754655cc44ec90b2b0fd86c9aefb8083dc08567f9e8da"`
[INFO] [stderr]    Compiling ctf v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0425]: cannot find function `open` in this scope
[INFO] [stderr]   --> src/lib.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         open();
[INFO] [stderr]    |         ^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use open;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `ctf`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "1cb27dc478b84e443a6754655cc44ec90b2b0fd86c9aefb8083dc08567f9e8da"`
[INFO] running `"docker" "rm" "-f" "1cb27dc478b84e443a6754655cc44ec90b2b0fd86c9aefb8083dc08567f9e8da"`
[INFO] [stdout] 1cb27dc478b84e443a6754655cc44ec90b2b0fd86c9aefb8083dc08567f9e8da