[INFO] crate rust_inbox 0.0.5 is already in cache
[INFO] extracting crate rust_inbox 0.0.5 into work/ex/beta-1.37-6/sources/1.36.0/reg/rust_inbox/0.0.5
[INFO] extracting crate rust_inbox 0.0.5 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rust_inbox/0.0.5
[INFO] validating manifest of rust_inbox-0.0.5 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 rust_inbox-0.0.5 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 rust_inbox-0.0.5
[INFO] finished frobbing rust_inbox-0.0.5
[INFO] frobbed toml for rust_inbox-0.0.5 written to work/ex/beta-1.37-6/sources/1.36.0/reg/rust_inbox/0.0.5/Cargo.toml
[INFO] started frobbing rust_inbox-0.0.5
[INFO] finished frobbing rust_inbox-0.0.5
[INFO] frobbed toml for rust_inbox-0.0.5 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rust_inbox/0.0.5/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] [stderr]     Blocking waiting for file lock on package cache lock
[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] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing rust_inbox-0.0.5 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/rust_inbox/0.0.5:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] f8d276c3015e6d0a94ef64176c4a6770e77782ed243563a7ffde816c74198924
[INFO] running `"docker" "start" "-a" "f8d276c3015e6d0a94ef64176c4a6770e77782ed243563a7ffde816c74198924"`
[INFO] [stderr]    Compiling rust_inbox v0.0.5 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `"docker" "inspect" "f8d276c3015e6d0a94ef64176c4a6770e77782ed243563a7ffde816c74198924"`
[INFO] running `"docker" "rm" "-f" "f8d276c3015e6d0a94ef64176c4a6770e77782ed243563a7ffde816c74198924"`
[INFO] [stdout] f8d276c3015e6d0a94ef64176c4a6770e77782ed243563a7ffde816c74198924
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/rust_inbox/0.0.5:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] de36c12ce3d66b74713cea1763065b8c4436b66c5609c5634aa4a855f2a83d05
[INFO] running `"docker" "start" "-a" "de36c12ce3d66b74713cea1763065b8c4436b66c5609c5634aa4a855f2a83d05"`
[INFO] [stderr]    Compiling base64 v0.2.1
[INFO] [stderr]    Compiling rust_inbox v0.0.5 (/opt/crater/workdir)
[INFO] [stderr] error[E0463]: can't find crate for `imap`
[INFO] [stderr]  --> examples/basic.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate imap;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `rust_inbox`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0463]: can't find crate for `imap`
[INFO] [stderr]  --> examples/gmail_oauth2.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate imap;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `rust_inbox`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/client.rs:832:29
[INFO] [stderr]     |
[INFO] [stderr] 832 |         generic_store(" ", |mut c, set, query| c.store(set, query));
[INFO] [stderr]     |                             ----^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/client.rs:837:33
[INFO] [stderr]     |
[INFO] [stderr] 837 |         generic_store(" UID ", |mut c, set, query| c.uid_store(set, query));
[INFO] [stderr]     |                                 ----^
[INFO] [stderr]     |                                 |
[INFO] [stderr]     |                                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/client.rs:855:28
[INFO] [stderr]     |
[INFO] [stderr] 855 |         generic_copy(" ", |mut c, set, query| c.copy(set, query))
[INFO] [stderr]     |                            ----^
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/client.rs:860:32
[INFO] [stderr]     |
[INFO] [stderr] 860 |         generic_copy(" UID ", |mut c, set, query| c.uid_copy(set, query))
[INFO] [stderr]     |                                ----^
[INFO] [stderr]     |                                |
[INFO] [stderr]     |                                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/client.rs:880:29
[INFO] [stderr]     |
[INFO] [stderr] 880 |         generic_fetch(" ", |mut c, seq, query| c.fetch(seq, query))
[INFO] [stderr]     |                             ----^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/client.rs:885:33
[INFO] [stderr]     |
[INFO] [stderr] 885 |         generic_fetch(" UID ", |mut c, seq, query| c.uid_fetch(seq, query))
[INFO] [stderr]     |                                 ----^
[INFO] [stderr]     |                                 |
[INFO] [stderr]     |                                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "de36c12ce3d66b74713cea1763065b8c4436b66c5609c5634aa4a855f2a83d05"`
[INFO] running `"docker" "rm" "-f" "de36c12ce3d66b74713cea1763065b8c4436b66c5609c5634aa4a855f2a83d05"`
[INFO] [stdout] de36c12ce3d66b74713cea1763065b8c4436b66c5609c5634aa4a855f2a83d05