[INFO] updating cached repository rafaelklaessen/rust_login
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rafaelklaessen/rust_login
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rafaelklaessen/rust_login" "work/ex/beta-1.38-1/sources/1.37.0/gh/rafaelklaessen/rust_login"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/rafaelklaessen/rust_login'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rafaelklaessen/rust_login" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rafaelklaessen/rust_login"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rafaelklaessen/rust_login'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4a828e71d7162dfa2dba393c63542377b5332011
[INFO] sha for GitHub repo rafaelklaessen/rust_login: 4a828e71d7162dfa2dba393c63542377b5332011
[INFO] validating manifest of rafaelklaessen/rust_login 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 rafaelklaessen/rust_login 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 rafaelklaessen/rust_login
[INFO] finished frobbing rafaelklaessen/rust_login
[INFO] frobbed toml for rafaelklaessen/rust_login written to work/ex/beta-1.38-1/sources/1.37.0/gh/rafaelklaessen/rust_login/Cargo.toml
[INFO] started frobbing rafaelklaessen/rust_login
[INFO] finished frobbing rafaelklaessen/rust_login
[INFO] frobbed toml for rafaelklaessen/rust_login written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rafaelklaessen/rust_login/Cargo.toml
[INFO] crate rafaelklaessen/rust_login 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing rafaelklaessen/rust_login 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/rafaelklaessen/rust_login:/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] 6221262c0f65a58e24cbb6fbc6d118647f94cf1c0cae61b0dba9c52f4b02c8a5
[INFO] running `"docker" "start" "-a" "6221262c0f65a58e24cbb6fbc6d118647f94cf1c0cae61b0dba9c52f4b02c8a5"`
[INFO] [stderr]    Compiling openssl v0.9.17
[INFO] [stderr]    Compiling sequence_trie v0.2.1
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling openssl-sys v0.9.17
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling error v0.1.9
[INFO] [stderr]    Compiling conduit-mime-types v0.7.3
[INFO] [stderr]    Compiling serde_json v0.8.6
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.12
[INFO] [stderr]    Compiling diesel v0.15.2
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling hyper v0.10.12
[INFO] [stderr]    Compiling backtrace v0.3.2
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling error-chain v0.7.2
[INFO] [stderr]    Compiling dotenv v0.9.0
[INFO] [stderr]    Compiling iron v0.5.1
[INFO] [stderr]    Compiling bcrypt v0.1.3
[INFO] [stderr]    Compiling cookie v0.5.1
[INFO] [stderr]    Compiling persistent v0.3.0
[INFO] [stderr]    Compiling mount v0.3.0
[INFO] [stderr]    Compiling router v0.5.1
[INFO] [stderr]    Compiling mount v0.3.0 (https://github.com/iron/mount.git#2c3d719b)
[INFO] [stderr]    Compiling derive-error-chain v0.10.1
[INFO] [stderr]    Compiling iron-sessionstorage v0.6.6
[INFO] [stderr]    Compiling bodyparser v0.5.0
[INFO] [stderr]    Compiling staticfile v0.4.0
[INFO] [stderr]    Compiling urlencoded v0.5.0
[INFO] [stderr]    Compiling dotenv v0.10.1
[INFO] [stderr] error[E0659]: `error_chain` is ambiguous (derive helper attribute vs any other name)
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dotenv-0.10.1/src/lib.rs:23:40
[INFO] [stderr]    |
[INFO] [stderr] 23 | #[cfg_attr(not(feature = "backtrace"), error_chain(backtrace = "false"))]
[INFO] [stderr]    |                                        ^^^^^^^^^^^ ambiguous name
[INFO] [stderr]    |
[INFO] [stderr] note: `error_chain` could refer to the derive helper attribute defined here
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dotenv-0.10.1/src/lib.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 22 | #[derive(Debug, error_chain)]
[INFO] [stderr]    |                 ^^^^^^^^^^^
[INFO] [stderr] note: `error_chain` could also refer to the derive macro imported here
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/dotenv-0.10.1/src/lib.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | #[macro_use]
[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 E0659`.
[INFO] [stderr] error: Could not compile `dotenv`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "6221262c0f65a58e24cbb6fbc6d118647f94cf1c0cae61b0dba9c52f4b02c8a5"`
[INFO] running `"docker" "rm" "-f" "6221262c0f65a58e24cbb6fbc6d118647f94cf1c0cae61b0dba9c52f4b02c8a5"`
[INFO] [stdout] 6221262c0f65a58e24cbb6fbc6d118647f94cf1c0cae61b0dba9c52f4b02c8a5