[INFO] updating cached repository steadylearner/Rust_Practice
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/steadylearner/Rust_Practice
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/steadylearner/Rust_Practice" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/steadylearner/Rust_Practice"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/steadylearner/Rust_Practice'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/steadylearner/Rust_Practice" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/steadylearner/Rust_Practice"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/steadylearner/Rust_Practice'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 88f562aabaac421acdee87a0b965d59f7fce8653
[INFO] sha for GitHub repo steadylearner/Rust_Practice: 88f562aabaac421acdee87a0b965d59f7fce8653
[INFO] validating manifest of steadylearner/Rust_Practice on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of steadylearner/Rust_Practice on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing steadylearner/Rust_Practice
[INFO] finished frobbing steadylearner/Rust_Practice
[INFO] frobbed toml for steadylearner/Rust_Practice written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/steadylearner/Rust_Practice/Cargo.toml
[INFO] started frobbing steadylearner/Rust_Practice
[INFO] finished frobbing steadylearner/Rust_Practice
[INFO] frobbed toml for steadylearner/Rust_Practice written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/steadylearner/Rust_Practice/Cargo.toml
[INFO] crate steadylearner/Rust_Practice already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking steadylearner/Rust_Practice against master#0f88167f89fffe321590c5148f21b7d51d44388d for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-0/master#0f88167f89fffe321590c5148f21b7d51d44388d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/steadylearner/Rust_Practice:/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=forbid" "-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" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 451ac051cf3ce814e7f76f793d45e0fea283a8f0f2e019c6a8eec513830b0e75
[INFO] running `"docker" "start" "-a" "451ac051cf3ce814e7f76f793d45e0fea283a8f0f2e019c6a8eec513830b0e75"`
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling num-complex v0.2.0
[INFO] [stderr]     Checking data-encoding v2.1.1
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]     Checking filetime v0.2.1
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking deflate v0.7.18
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking tar v0.4.17
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking ring v0.13.2
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking flate2 v1.0.2
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking regex v1.0.5
[INFO] [stderr]     Checking rayon v1.0.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]     Checking tiff v0.2.0
[INFO] [stderr]     Checking image v0.20.0
[INFO] [stderr]     Checking rust_practice v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0422]: cannot find struct, variant or union type `L` in this scope
[INFO] [stderr]  --> src/main.rs:2:13
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let a = L { x: "Hello" };
[INFO] [stderr]   |             ^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0422`.
[INFO] [stderr] error[E0422]: cannot find struct, variant or union type `L` in this scope
[INFO] [stderr]  --> src/main.rs:2:13
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let a = L { x: "Hello" };
[INFO] [stderr]   |             ^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust_practice`.
[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 E0422`.
[INFO] [stderr] error: Could not compile `rust_practice`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "451ac051cf3ce814e7f76f793d45e0fea283a8f0f2e019c6a8eec513830b0e75"`
[INFO] running `"docker" "rm" "-f" "451ac051cf3ce814e7f76f793d45e0fea283a8f0f2e019c6a8eec513830b0e75"`
[INFO] [stdout] 451ac051cf3ce814e7f76f793d45e0fea283a8f0f2e019c6a8eec513830b0e75