[INFO] crate nastran 0.0.1 is already in cache
[INFO] extracting crate nastran 0.0.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/nastran/0.0.1
[INFO] extracting crate nastran 0.0.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/nastran/0.0.1
[INFO] validating manifest of nastran-0.0.1 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 nastran-0.0.1 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 nastran-0.0.1
[INFO] finished frobbing nastran-0.0.1
[INFO] frobbed toml for nastran-0.0.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/nastran/0.0.1/Cargo.toml
[INFO] started frobbing nastran-0.0.1
[INFO] finished frobbing nastran-0.0.1
[INFO] frobbed toml for nastran-0.0.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/nastran/0.0.1/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 nastran-0.0.1 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/nastran/0.0.1:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] b4d8e90b59067aa9661d62c188ab00777e6615dfb3a674583fc48dc59b4543c8
[INFO] running `"docker" "start" "-a" "b4d8e90b59067aa9661d62c188ab00777e6615dfb3a674583fc48dc59b4543c8"`
[INFO] [stderr]    Compiling ascii v0.8.7
[INFO] [stderr]    Compiling memmap v0.5.2
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling nastran v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/datfile/mod.rs:262:21
[INFO] [stderr]     |
[INFO] [stderr] 262 |                 let mut existing = self.deck.cards.index_mut(index);
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/datfile/mod.rs:280:21
[INFO] [stderr]     |
[INFO] [stderr] 280 |                 let mut existing = self.deck.cards.index_mut(index);
[INFO] [stderr]     |                     ----^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/datfile/mod.rs:262:21
[INFO] [stderr]     |
[INFO] [stderr] 262 |                 let mut existing = self.deck.cards.index_mut(index);
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/datfile/mod.rs:280:21
[INFO] [stderr]     |
[INFO] [stderr] 280 |                 let mut existing = self.deck.cards.index_mut(index);
[INFO] [stderr]     |                     ----^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.94s
[INFO] running `"docker" "inspect" "b4d8e90b59067aa9661d62c188ab00777e6615dfb3a674583fc48dc59b4543c8"`
[INFO] running `"docker" "rm" "-f" "b4d8e90b59067aa9661d62c188ab00777e6615dfb3a674583fc48dc59b4543c8"`
[INFO] [stdout] b4d8e90b59067aa9661d62c188ab00777e6615dfb3a674583fc48dc59b4543c8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/nastran/0.0.1:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] efa7bd230a57436422bb8e64b16a972f9da932ae42d3140c9ab9b8b7068b3427
[INFO] running `"docker" "start" "-a" "efa7bd230a57436422bb8e64b16a972f9da932ae42d3140c9ab9b8b7068b3427"`
[INFO] [stderr]    Compiling nastran v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:18
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![cfg_attr(test,feature(test))]
[INFO] [stderr]   |                  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:4:18
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![cfg_attr(test,feature(test))]
[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 `nastran`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 `nastran`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "efa7bd230a57436422bb8e64b16a972f9da932ae42d3140c9ab9b8b7068b3427"`
[INFO] running `"docker" "rm" "-f" "efa7bd230a57436422bb8e64b16a972f9da932ae42d3140c9ab9b8b7068b3427"`
[INFO] [stdout] efa7bd230a57436422bb8e64b16a972f9da932ae42d3140c9ab9b8b7068b3427