[INFO] cloning repository https://github.com/theatlasroom/rust-learning
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/theatlasroom/rust-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheatlasroom%2Frust-learning"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheatlasroom%2Frust-learning'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7d4a390a3ace3085dbcc821e2fb7899f7a668a1c
[INFO] checking theatlasroom/rust-learning against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheatlasroom%2Frust-learning" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/theatlasroom/rust-learning on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/theatlasroom/rust-learning
[INFO] finished tweaking git repo https://github.com/theatlasroom/rust-learning
[INFO] tweaked toml for git repo https://github.com/theatlasroom/rust-learning written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/theatlasroom/rust-learning already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bf6db707be6752f65c10075374274b3c012a3d08186384f88d6ea2f0a4ef8dce
[INFO] running `"docker" "start" "-a" "bf6db707be6752f65c10075374274b3c012a3d08186384f88d6ea2f0a4ef8dce"`
[INFO] [stderr]     Checking learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0530]: match bindings cannot shadow tuple variants
[INFO] [stderr]   --> src/bin/file_io.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         Err => println!("Error\n{:?}", handle),
[INFO] [stderr]    |         ^^^ cannot be named the same as a tuple variant
[INFO] [stderr] 
[INFO] [stderr] error[E0530]: match bindings cannot shadow tuple variants
[INFO] [stderr]   --> src/bin/file_io.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         Err => println!("Error\n{:?}", handle),
[INFO] [stderr]    |         ^^^ cannot be named the same as a tuple variant
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `handle` in this scope
[INFO] [stderr]   --> src/bin/file_io.rs:28:40
[INFO] [stderr]    |
[INFO] [stderr] 28 |         Err => println!("Error\n{:?}", handle),
[INFO] [stderr]    |                                        ^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `handle` in this scope
[INFO] [stderr]   --> src/bin/file_io.rs:28:40
[INFO] [stderr]    |
[INFO] [stderr] 28 |         Err => println!("Error\n{:?}", handle),
[INFO] [stderr]    |                                        ^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/bin/file_io.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut handle = match fs::File::open(f){
[INFO] [stderr]    |                            ----------------- this expression has type `std::result::Result<std::fs::File, std::io::Error>`
[INFO] [stderr] 27 |         Some(handle) => println!("File\n{:?}", handle),
[INFO] [stderr]    |         ^^^^^^^^^^^^ expected enum `std::result::Result`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected enum `std::result::Result<std::fs::File, std::io::Error>`
[INFO] [stderr]               found enum `std::option::Option<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0425, E0530.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `learning`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/bin/file_io.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut handle = match fs::File::open(f){
[INFO] [stderr]    |                            ----------------- this expression has type `std::result::Result<std::fs::File, std::io::Error>`
[INFO] [stderr] 27 |         Some(handle) => println!("File\n{:?}", handle),
[INFO] [stderr]    |         ^^^^^^^^^^^^ expected enum `std::result::Result`, found enum `std::option::Option`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected enum `std::result::Result<std::fs::File, std::io::Error>`
[INFO] [stderr]               found enum `std::option::Option<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0425, E0530.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `learning`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: value assigned to `dice_roll` is never read
[INFO] [stderr]   --> src/bin/dice_roll.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let mut dice_roll = 0;
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "bf6db707be6752f65c10075374274b3c012a3d08186384f88d6ea2f0a4ef8dce"`
[INFO] running `"docker" "rm" "-f" "bf6db707be6752f65c10075374274b3c012a3d08186384f88d6ea2f0a4ef8dce"`
[INFO] [stdout] bf6db707be6752f65c10075374274b3c012a3d08186384f88d6ea2f0a4ef8dce