[INFO] updating cached repository Chabare/weather-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Chabare/weather-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Chabare/weather-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/Chabare/weather-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Chabare/weather-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Chabare/weather-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Chabare/weather-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Chabare/weather-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 49599b5775382260543dcded65cb0fdb19cad776
[INFO] sha for GitHub repo Chabare/weather-rs: 49599b5775382260543dcded65cb0fdb19cad776
[INFO] validating manifest of Chabare/weather-rs 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 Chabare/weather-rs 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 Chabare/weather-rs
[INFO] finished frobbing Chabare/weather-rs
[INFO] frobbed toml for Chabare/weather-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/Chabare/weather-rs/Cargo.toml
[INFO] started frobbing Chabare/weather-rs
[INFO] finished frobbing Chabare/weather-rs
[INFO] frobbed toml for Chabare/weather-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Chabare/weather-rs/Cargo.toml
[INFO] crate Chabare/weather-rs 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 Chabare/weather-rs 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Chabare/weather-rs:/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] 83e6a9f6e0171dde146b06e10bbb34f8a08aa6a59b93e9d94dc365f3384e9a71
[INFO] running `"docker" "start" "-a" "83e6a9f6e0171dde146b06e10bbb34f8a08aa6a59b93e9d94dc365f3384e9a71"`
[INFO] [stderr]    Compiling num-traits v0.2.1
[INFO] [stderr]    Compiling openssl-sys v0.9.27
[INFO] [stderr]    Compiling tokio-executor v0.1.0
[INFO] [stderr]    Compiling relay v0.1.1
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling tokio-io v0.1.6
[INFO] [stderr]    Compiling serde_urlencoded v0.5.1
[INFO] [stderr]    Compiling libflate v0.1.14
[INFO] [stderr]    Compiling serde_derive v1.0.29
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling uuid v0.5.1
[INFO] [stderr]    Compiling tokio-threadpool v0.1.0
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling tokio-reactor v0.1.0
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.4
[INFO] [stderr]    Compiling num-integer v0.1.36
[INFO] [stderr]    Compiling serde_json v1.0.10
[INFO] [stderr]    Compiling num-iter v0.1.35
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling chrono v0.4.0
[INFO] [stderr]    Compiling tokio v0.1.2
[INFO] [stderr]    Compiling tokio-core v0.1.13
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling native-tls v0.1.5
[INFO] [stderr]    Compiling tokio-tls v0.1.4
[INFO] [stderr]    Compiling hyper v0.11.22
[INFO] [stderr]    Compiling hyper-tls v0.1.2
[INFO] [stderr]    Compiling reqwest v0.8.5
[INFO] [stderr]    Compiling weather v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(associated_type_defaults)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `borrow`, `env`
[INFO] [stderr]   --> src/lib.rs:10:11
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::{borrow, env, io};
[INFO] [stderr]    |           ^^^^^^  ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt`
[INFO] [stderr]  --> src/api/models.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fmt;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde::de`
[INFO] [stderr]  --> src/api/models.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serde::de;
[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 E0554`.
[INFO] [stderr] error: Could not compile `weather`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "83e6a9f6e0171dde146b06e10bbb34f8a08aa6a59b93e9d94dc365f3384e9a71"`
[INFO] running `"docker" "rm" "-f" "83e6a9f6e0171dde146b06e10bbb34f8a08aa6a59b93e9d94dc365f3384e9a71"`
[INFO] [stdout] 83e6a9f6e0171dde146b06e10bbb34f8a08aa6a59b93e9d94dc365f3384e9a71