[INFO] crate mpu9250-i2c 0.6.6 is already in cache
[INFO] extracting crate mpu9250-i2c 0.6.6 into work/ex/beta-1.37-6/sources/1.36.0/reg/mpu9250-i2c/0.6.6
[INFO] extracting crate mpu9250-i2c 0.6.6 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mpu9250-i2c/0.6.6
[INFO] validating manifest of mpu9250-i2c-0.6.6 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 mpu9250-i2c-0.6.6 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 mpu9250-i2c-0.6.6
[INFO] finished frobbing mpu9250-i2c-0.6.6
[INFO] frobbed toml for mpu9250-i2c-0.6.6 written to work/ex/beta-1.37-6/sources/1.36.0/reg/mpu9250-i2c/0.6.6/Cargo.toml
[INFO] started frobbing mpu9250-i2c-0.6.6
[INFO] finished frobbing mpu9250-i2c-0.6.6
[INFO] frobbed toml for mpu9250-i2c-0.6.6 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mpu9250-i2c/0.6.6/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] 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mpu9250-i2c-0.6.6 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mpu9250-i2c/0.6.6:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 83cc8b24bdc4864477c9d8b5ba7d95a3b0a01a8454deef0d7ace3d8be821adff
[INFO] running `"docker" "start" "-a" "83cc8b24bdc4864477c9d8b5ba7d95a3b0a01a8454deef0d7ace3d8be821adff"`
[INFO] [stderr]    Compiling nb v0.1.2
[INFO] [stderr]    Compiling embedded-hal v0.2.3
[INFO] [stderr]    Compiling mpu9250-i2c v0.6.6 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `"docker" "inspect" "83cc8b24bdc4864477c9d8b5ba7d95a3b0a01a8454deef0d7ace3d8be821adff"`
[INFO] running `"docker" "rm" "-f" "83cc8b24bdc4864477c9d8b5ba7d95a3b0a01a8454deef0d7ace3d8be821adff"`
[INFO] [stdout] 83cc8b24bdc4864477c9d8b5ba7d95a3b0a01a8454deef0d7ace3d8be821adff
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mpu9250-i2c/0.6.6:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2cdb8e9e44c3f48c9cb708ac179e009edb60881a6e09bf51f01a4785711a2963
[INFO] running `"docker" "start" "-a" "2cdb8e9e44c3f48c9cb708ac179e009edb60881a6e09bf51f01a4785711a2963"`
[INFO] [stderr]    Compiling m v0.1.1
[INFO] [stderr]    Compiling cast v0.2.2
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]    Compiling mat v0.2.0
[INFO] [stderr]    Compiling sysfs_gpio v0.5.4
[INFO] [stderr]    Compiling madgwick v0.1.1
[INFO] [stderr]    Compiling spidev v0.3.0
[INFO] [stderr]    Compiling linux-embedded-hal v0.2.2
[INFO] [stderr]    Compiling mpu9250-i2c v0.6.6 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> examples/calibrate.rs:307:9
[INFO] [stderr]     |
[INFO] [stderr] 307 |     let mut vm = mpu9250.get_mag().unwrap();
[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]     Finished dev [unoptimized + debuginfo] target(s) in 6.27s
[INFO] running `"docker" "inspect" "2cdb8e9e44c3f48c9cb708ac179e009edb60881a6e09bf51f01a4785711a2963"`
[INFO] running `"docker" "rm" "-f" "2cdb8e9e44c3f48c9cb708ac179e009edb60881a6e09bf51f01a4785711a2963"`
[INFO] [stdout] 2cdb8e9e44c3f48c9cb708ac179e009edb60881a6e09bf51f01a4785711a2963
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mpu9250-i2c/0.6.6:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] dca94feb93fef83c73608c3b801db9036ee4fc864e8e009321a2567732f5dd93
[INFO] running `"docker" "start" "-a" "dca94feb93fef83c73608c3b801db9036ee4fc864e8e009321a2567732f5dd93"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mpu9250_i2c-eec22d284d4cc9e0
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mpu9250-i2c
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 47) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs -  (line 47) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: unresolved import
[INFO] [stdout]  --> src/lib.rs:51:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mpu9250::{calibration::Calibration, Mpu9250};
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     unresolved import
[INFO] [stdout]   |     help: a similar path exists: `mpu9250_i2c::mpu9250`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `mpu9250`
[INFO] [stdout]  --> src/lib.rs:51:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mpu9250::{calibration::Calibration, Mpu9250};
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     unresolved import
[INFO] [stdout]   |     help: a similar path exists: `mpu9250_i2c::mpu9250`
[INFO] [stdout] 
[INFO] [stdout] error[E0422]: cannot find struct, variant or union type `Calibration` in this scope
[INFO] [stdout]   --> src/lib.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |   let cal = Calibration {
[INFO] [stdout]    |             ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] help: possible candidate is found in another module, you can import it into scope
[INFO] [stdout]    |
[INFO] [stdout] 4  | use mpu9250_i2c::calibration::Calibration;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0422, E0432, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0422`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs -  (line 47)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "dca94feb93fef83c73608c3b801db9036ee4fc864e8e009321a2567732f5dd93"`
[INFO] running `"docker" "rm" "-f" "dca94feb93fef83c73608c3b801db9036ee4fc864e8e009321a2567732f5dd93"`
[INFO] [stdout] dca94feb93fef83c73608c3b801db9036ee4fc864e8e009321a2567732f5dd93