[INFO] crate charmhelpers 0.1.3 is already in cache
[INFO] extracting crate charmhelpers 0.1.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/charmhelpers/0.1.3
[INFO] extracting crate charmhelpers 0.1.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/charmhelpers/0.1.3
[INFO] validating manifest of charmhelpers-0.1.3 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 charmhelpers-0.1.3 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 charmhelpers-0.1.3
[INFO] finished frobbing charmhelpers-0.1.3
[INFO] frobbed toml for charmhelpers-0.1.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/charmhelpers/0.1.3/Cargo.toml
[INFO] started frobbing charmhelpers-0.1.3
[INFO] finished frobbing charmhelpers-0.1.3
[INFO] frobbed toml for charmhelpers-0.1.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/charmhelpers/0.1.3/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 charmhelpers-0.1.3 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/charmhelpers/0.1.3:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 27a63230bb2c82a04338ebd45763c6a7e8262cdf597379866791b20a5167d15e
[INFO] running `"docker" "start" "-a" "27a63230bb2c82a04338ebd45763c6a7e8262cdf597379866791b20a5167d15e"`
[INFO] [stderr]    Compiling juju v0.3.1
[INFO] [stderr]    Compiling rusqlite v0.14.0
[INFO] [stderr]    Compiling charmhelpers v0.1.3
[INFO] [stderr]    Compiling juju v1.0.0
[INFO] [stderr]    Compiling charmhelpers v0.1.3 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.09s
[INFO] running `"docker" "inspect" "27a63230bb2c82a04338ebd45763c6a7e8262cdf597379866791b20a5167d15e"`
[INFO] running `"docker" "rm" "-f" "27a63230bb2c82a04338ebd45763c6a7e8262cdf597379866791b20a5167d15e"`
[INFO] [stdout] 27a63230bb2c82a04338ebd45763c6a7e8262cdf597379866791b20a5167d15e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/charmhelpers/0.1.3:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 48e18c8363b4254ea22bb6ef6beab8be2256042d61941f34ed321f100ffaa51e
[INFO] running `"docker" "start" "-a" "48e18c8363b4254ea22bb6ef6beab8be2256042d61941f34ed321f100ffaa51e"`
[INFO] [stderr]    Compiling charmhelpers v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `super::super::execution_environment`
[INFO] [stderr]    --> src/core/hookenv.rs:131:13
[INFO] [stderr]     |
[INFO] [stderr] 131 |         use super::super::execution_environment;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `execution_environment` in `core::hookenv`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]    --> src/core/hookenv.rs:132:13
[INFO] [stderr]     |
[INFO] [stderr] 132 |         use std::env;
[INFO] [stderr]     |             ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `charmhelpers`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "48e18c8363b4254ea22bb6ef6beab8be2256042d61941f34ed321f100ffaa51e"`
[INFO] running `"docker" "rm" "-f" "48e18c8363b4254ea22bb6ef6beab8be2256042d61941f34ed321f100ffaa51e"`
[INFO] [stdout] 48e18c8363b4254ea22bb6ef6beab8be2256042d61941f34ed321f100ffaa51e