[INFO] crate cortex-m-rt 0.6.10 is already in cache
[INFO] testing cortex-m-rt-0.6.10 against 1.38.0 for beta-1.39-1
[INFO] extracting crate cortex-m-rt 0.6.10 into work/builds/worker-7/source
[INFO] validating manifest of crates.io crate cortex-m-rt 0.6.10 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate cortex-m-rt 0.6.10
[INFO] removed 1 missing examples
[INFO] finished tweaking crates.io crate cortex-m-rt 0.6.10
[INFO] tweaked toml for crates.io crate cortex-m-rt 0.6.10 written to work/builds/worker-7/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 3b0519ab743bd4fc9ba598d9737c67be21f4d133fff56021157e1694afd92098
[INFO] running `"docker" "start" "-a" "3b0519ab743bd4fc9ba598d9737c67be21f4d133fff56021157e1694afd92098"`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.10 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.5
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.61s
[INFO] running `"docker" "inspect" "3b0519ab743bd4fc9ba598d9737c67be21f4d133fff56021157e1694afd92098"`
[INFO] running `"docker" "rm" "-f" "3b0519ab743bd4fc9ba598d9737c67be21f4d133fff56021157e1694afd92098"`
[INFO] [stdout] 3b0519ab743bd4fc9ba598d9737c67be21f4d133fff56021157e1694afd92098
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1bb09a7d420547ff4991439ce9440bb79e3a4c3d8d43f69eec51bac1d05184f3
[INFO] running `"docker" "start" "-a" "1bb09a7d420547ff4991439ce9440bb79e3a4c3d8d43f69eec51bac1d05184f3"`
[INFO] [stderr]    Compiling panic-halt v0.2.0
[INFO] [stderr]    Compiling cortex-m-rt v0.6.10 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling compiletest_rs v0.3.23
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/compiletest_rs-0.3.23/src/lib.rs:13:39
[INFO] [stderr]    |
[INFO] [stderr] 13 | #![cfg_attr(not(feature = "norustc"), feature(rustc_private))]
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/compiletest_rs-0.3.23/src/lib.rs:14:38
[INFO] [stderr]    |
[INFO] [stderr] 14 | #![cfg_attr(not(feature = "stable"), feature(test))]
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0560]: struct `test::TestOpts` has no field named `report_time`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/compiletest_rs-0.3.23/src/lib.rs:129:9
[INFO] [stderr]     |
[INFO] [stderr] 129 |         report_time: false,
[INFO] [stderr]     |         ^^^^^^^^^^^ `test::TestOpts` does not have this field
[INFO] [stderr]     |
[INFO] [stderr]     = note: available fields are: `list`, `filter`, `filter_exact`, `exclude_should_panic`, `run_ignored` ... and 9 others
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0560.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `compiletest_rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "1bb09a7d420547ff4991439ce9440bb79e3a4c3d8d43f69eec51bac1d05184f3"`
[INFO] running `"docker" "rm" "-f" "1bb09a7d420547ff4991439ce9440bb79e3a4c3d8d43f69eec51bac1d05184f3"`
[INFO] [stdout] 1bb09a7d420547ff4991439ce9440bb79e3a4c3d8d43f69eec51bac1d05184f3