[INFO] cloning repository https://github.com/stay-on-main/fat_fs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stay-on-main/fat_fs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstay-on-main%2Ffat_fs"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstay-on-main%2Ffat_fs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 68286bb53b5a752e594f1d8e238231d85c6e0e3e
[INFO] checking stay-on-main/fat_fs against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstay-on-main%2Ffat_fs" "/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/stay-on-main/fat_fs 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/stay-on-main/fat_fs
[INFO] finished tweaking git repo https://github.com/stay-on-main/fat_fs
[INFO] tweaked toml for git repo https://github.com/stay-on-main/fat_fs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/stay-on-main/fat_fs 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] [stdout] 791bbb099fc0f1b58f640cf3ba2057f0ec2c51c64c94afaa6edf0f07a3c98a92
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "791bbb099fc0f1b58f640cf3ba2057f0ec2c51c64c94afaa6edf0f07a3c98a92"`
[INFO] [stderr]     Checking fat_fs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `path::Path`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use path::Path;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `file::File`
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use file::File;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `dir_entry::DirEntry`
[INFO] [stderr]   --> src/lib.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use dir_entry::DirEntry;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `stream::Stream`
[INFO] [stderr]   --> src/lib.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use stream::Stream;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `path::Path`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use path::Path;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `file::File`
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use file::File;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `dir_entry::DirEntry`
[INFO] [stderr]   --> src/lib.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use dir_entry::DirEntry;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `stream::Stream`
[INFO] [stderr]   --> src/lib.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use stream::Stream;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]   --> examples/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::fs::File;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: there are too many leading `super` keywords
[INFO] [stderr]  --> examples/image.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub use super::fat_fs::storage_io::StorageIo;
[INFO] [stderr]   |         ^^^^^ there are too many leading `super` keywords
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `StorageIo` in this scope
[INFO] [stderr]   --> examples/image.rs:14:6
[INFO] [stderr]    |
[INFO] [stderr] 14 | impl StorageIo for Image {
[INFO] [stderr]    |      ^^^^^^^^^ not found in this scope
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 1  | use fat_fs::storage_io::StorageIo;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `image`
[INFO] [stderr]   --> examples/image.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / use std::fs::File;
[INFO] [stderr] 2  | | use std::io::{ Read, Seek, SeekFrom, Write };
[INFO] [stderr] 3  | | use core::cell::{RefCell};
[INFO] [stderr] 4  | | pub use super::fat_fs::storage_io::StorageIo;
[INFO] [stderr] ...  |
[INFO] [stderr] 71 | |     }
[INFO] [stderr] 72 | | }
[INFO] [stderr]    | |_^ consider adding a `main` function to `examples/image.rs`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude`
[INFO] [stderr]   --> examples/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0405, E0433, E0601.
[INFO] [stderr] For more information about an error, try `rustc --explain E0405`.
[INFO] [stderr] error: could not compile `fat_fs`.
[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: function is never used: `print_tree`
[INFO] [stderr]   --> examples/main.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn print_tree<T: StorageIo>(dir: &Dir<T>, level: usize) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "791bbb099fc0f1b58f640cf3ba2057f0ec2c51c64c94afaa6edf0f07a3c98a92"`
[INFO] running `"docker" "rm" "-f" "791bbb099fc0f1b58f640cf3ba2057f0ec2c51c64c94afaa6edf0f07a3c98a92"`
[INFO] [stdout] 791bbb099fc0f1b58f640cf3ba2057f0ec2c51c64c94afaa6edf0f07a3c98a92