[INFO] updating cached repository seiyanuta/nsh
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/seiyanuta/nsh
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/seiyanuta/nsh" "work/ex/beta-1.38-1/sources/1.37.0/gh/seiyanuta/nsh"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/seiyanuta/nsh'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/seiyanuta/nsh" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/seiyanuta/nsh"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/seiyanuta/nsh'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 343ab3f389479acd2a4d3e71059778580c045ba8
[INFO] sha for GitHub repo seiyanuta/nsh: 343ab3f389479acd2a4d3e71059778580c045ba8
[INFO] validating manifest of seiyanuta/nsh 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 seiyanuta/nsh 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 seiyanuta/nsh
[INFO] finished frobbing seiyanuta/nsh
[INFO] frobbed toml for seiyanuta/nsh written to work/ex/beta-1.38-1/sources/1.37.0/gh/seiyanuta/nsh/Cargo.toml
[INFO] started frobbing seiyanuta/nsh
[INFO] finished frobbing seiyanuta/nsh
[INFO] frobbed toml for seiyanuta/nsh written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/seiyanuta/nsh/Cargo.toml
[INFO] crate seiyanuta/nsh 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 seiyanuta/nsh 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/seiyanuta/nsh:/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] 231669ed9743b78f95b4eff876884a132a64a1d8b32f73d7ce4c3d77f196d19e
[INFO] running `"docker" "start" "-a" "231669ed9743b78f95b4eff876884a132a64a1d8b32f73d7ce4c3d77f196d19e"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v0.15.31
[INFO] [stderr]    Compiling nsh v0.1.3 (/opt/crater/workdir)
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling nix v0.12.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling structopt v0.2.15
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `"docker" "inspect" "231669ed9743b78f95b4eff876884a132a64a1d8b32f73d7ce4c3d77f196d19e"`
[INFO] running `"docker" "rm" "-f" "231669ed9743b78f95b4eff876884a132a64a1d8b32f73d7ce4c3d77f196d19e"`
[INFO] [stdout] 231669ed9743b78f95b4eff876884a132a64a1d8b32f73d7ce4c3d77f196d19e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/seiyanuta/nsh:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4055730424aac980454c58dbe1d4d06a9b4c502f5086b869a8a74fd7b212fcdc
[INFO] running `"docker" "start" "-a" "4055730424aac980454c58dbe1d4d06a9b4c502f5086b869a8a74fd7b212fcdc"`
[INFO] [stderr]    Compiling nsh v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![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 `nsh`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4055730424aac980454c58dbe1d4d06a9b4c502f5086b869a8a74fd7b212fcdc"`
[INFO] running `"docker" "rm" "-f" "4055730424aac980454c58dbe1d4d06a9b4c502f5086b869a8a74fd7b212fcdc"`
[INFO] [stdout] 4055730424aac980454c58dbe1d4d06a9b4c502f5086b869a8a74fd7b212fcdc