[INFO] crate bdrck 0.15.0 is already in cache
[INFO] extracting crate bdrck 0.15.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/bdrck/0.15.0
[INFO] extracting crate bdrck 0.15.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bdrck/0.15.0
[INFO] validating manifest of bdrck-0.15.0 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 bdrck-0.15.0 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 bdrck-0.15.0
[INFO] finished frobbing bdrck-0.15.0
[INFO] frobbed toml for bdrck-0.15.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/bdrck/0.15.0/Cargo.toml
[INFO] started frobbing bdrck-0.15.0
[INFO] finished frobbing bdrck-0.15.0
[INFO] frobbed toml for bdrck-0.15.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/bdrck/0.15.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 bdrck-0.15.0 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/bdrck/0.15.0:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 3f43dba28318387254b8746126946c35e5d00f6b245b24c56f93925593059793
[INFO] running `"docker" "start" "-a" "3f43dba28318387254b8746126946c35e5d00f6b245b24c56f93925593059793"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libsodium-sys v0.2.2
[INFO] [stderr]    Compiling rmp v0.8.7
[INFO] [stderr]    Compiling rmp-serde v0.13.7
[INFO] [stderr]    Compiling sodiumoxide v0.2.2
[INFO] [stderr]    Compiling bdrck v0.15.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0252]: the name `Deserialize` is defined multiple times
[INFO] [stderr]   --> src/crypto/key.rs:21:20
[INFO] [stderr]    |
[INFO] [stderr] 20 | use serde::{Deserialize, Deserializer, Serialize, Serializer};
[INFO] [stderr]    |             ----------- previous import of the macro `Deserialize` here
[INFO] [stderr] 21 | use serde_derive::{Deserialize, Serialize};
[INFO] [stderr]    |                    ^^^^^^^^^^^--
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    `Deserialize` reimported here
[INFO] [stderr]    |                    help: remove unnecessary import
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Deserialize` must be defined only once in the macro namespace of this module
[INFO] [stderr] 
[INFO] [stderr] error[E0252]: the name `Serialize` is defined multiple times
[INFO] [stderr]   --> src/crypto/key.rs:21:33
[INFO] [stderr]    |
[INFO] [stderr] 20 | use serde::{Deserialize, Deserializer, Serialize, Serializer};
[INFO] [stderr]    |                                        --------- previous import of the macro `Serialize` here
[INFO] [stderr] 21 | use serde_derive::{Deserialize, Serialize};
[INFO] [stderr]    |                                 ^^^^^^^^^ `Serialize` reimported here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Serialize` must be defined only once in the macro namespace of this module
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize`, `Serialize`
[INFO] [stderr]   --> src/crypto/key.rs:21:20
[INFO] [stderr]    |
[INFO] [stderr] 21 | use serde_derive::{Deserialize, Serialize};
[INFO] [stderr]    |                    ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `libc` is imported redundantly
[INFO] [stderr]    --> src/fs.rs:135:16
[INFO] [stderr]     |
[INFO] [stderr] 18  | use libc;
[INFO] [stderr]     |     ---- the item `libc` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 135 |     use libc::{self, c_int};
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `CString` is imported redundantly
[INFO] [stderr]    --> src/fs.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 20  | use std::ffi::{CString, OsString};
[INFO] [stderr]     |                ------- the item `CString` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 136 |     use std::ffi::CString;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0252`.
[INFO] [stderr] error: Could not compile `bdrck`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3f43dba28318387254b8746126946c35e5d00f6b245b24c56f93925593059793"`
[INFO] running `"docker" "rm" "-f" "3f43dba28318387254b8746126946c35e5d00f6b245b24c56f93925593059793"`
[INFO] [stdout] 3f43dba28318387254b8746126946c35e5d00f6b245b24c56f93925593059793