[INFO] updating cached repository https://github.com/pineapplehunter/Append-Only-Storage
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0039794e3c91771fff58f1ff0d8f99201bb21289
[INFO] checking pineapplehunter/Append-Only-Storage against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpineapplehunter%2FAppend-Only-Storage" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pineapplehunter/Append-Only-Storage on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/pineapplehunter/Append-Only-Storage
[INFO] finished tweaking git repo https://github.com/pineapplehunter/Append-Only-Storage
[INFO] tweaked toml for git repo https://github.com/pineapplehunter/Append-Only-Storage written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/pineapplehunter/Append-Only-Storage already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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] 551eabf80f40523891d25d851a210bc083f885ebd8b620b7276ca6810f5f40b6
[INFO] running `"docker" "start" "-a" "551eabf80f40523891d25d851a210bc083f885ebd8b620b7276ca6810f5f40b6"`
[INFO] [stderr]     Checking ignore v0.4.10
[INFO] [stderr]     Checking structopt v0.3.3
[INFO] [stderr]     Checking hash-storage v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::ptr::hash`
[INFO] [stderr]  --> src/file.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::ptr::hash;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]  --> src/storage.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{Error, Read, Write};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ptr::hash`
[INFO] [stderr]  --> src/storage.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::ptr::hash;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/storage.rs:4:28
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{Error, Read, Write};
[INFO] [stderr]   |                            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/file.rs:49:21
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 let mut hashes = hashes_lock.read().expect("could not get write lock");
[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/file.rs:78:17
[INFO] [stderr]    |
[INFO] [stderr] 78 |             let mut size_left = buf.len();
[INFO] [stderr]    |                 ----^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `id`
[INFO] [stderr]  --> src/file.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     id: usize,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `hashes`
[INFO] [stderr]   --> src/file.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     hashes: Vec<Hash>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `storage`
[INFO] [stderr]   --> src/file.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     storage: &'a Storage,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `index`
[INFO] [stderr]   --> src/file.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     index: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `hashes`
[INFO] [stderr]   --> src/file.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     hashes: Vec<Hash>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/file.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |         self.temp_file.seek(SeekFrom::Start(0));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/file.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         std::io::copy(&mut self.temp_file, &mut hasher);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/file.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |         self.temp_file.seek(SeekFrom::Start(0));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/file.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |             std::io::copy(&mut self.temp_file, &mut files.storage_file);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/file.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |             writeln!(&mut files.meta, "{} {}", &hash_str, new_file_size);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/storage.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         std::fs::DirBuilder::new().create(&path);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ptr::hash`
[INFO] [stderr]  --> src/file.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::ptr::hash;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]  --> src/storage.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{Error, Read, Write};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ptr::hash`
[INFO] [stderr]  --> src/storage.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::ptr::hash;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/storage.rs:4:28
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{Error, Read, Write};
[INFO] [stderr]   |                            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/file.rs:49:21
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 let mut hashes = hashes_lock.read().expect("could not get write lock");
[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/file.rs:78:17
[INFO] [stderr]    |
[INFO] [stderr] 78 |             let mut size_left = buf.len();
[INFO] [stderr]    |                 ----^^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `id`
[INFO] [stderr]  --> src/file.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     id: usize,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `hashes`
[INFO] [stderr]   --> src/file.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     hashes: Vec<Hash>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `storage`
[INFO] [stderr]   --> src/file.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     storage: &'a Storage,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `index`
[INFO] [stderr]   --> src/file.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     index: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `hashes`
[INFO] [stderr]   --> src/file.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     hashes: Vec<Hash>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/file.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |         self.temp_file.seek(SeekFrom::Start(0));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/file.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         std::io::copy(&mut self.temp_file, &mut hasher);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/file.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |         self.temp_file.seek(SeekFrom::Start(0));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/file.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |             std::io::copy(&mut self.temp_file, &mut files.storage_file);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/file.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |             writeln!(&mut files.meta, "{} {}", &hash_str, new_file_size);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/storage.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         std::fs::DirBuilder::new().create(&path);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `FileType`
[INFO] [stderr]  --> examples/save_recursive.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::fs::{File, FileType};
[INFO] [stderr]   |                     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `WalkParallel`, `Walk`
[INFO] [stderr]  --> examples/save_recursive.rs:8:14
[INFO] [stderr]   |
[INFO] [stderr] 8 | use ignore::{Walk, WalkBuilder, WalkParallel, WalkState};
[INFO] [stderr]   |              ^^^^               ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.73s
[INFO] running `"docker" "inspect" "551eabf80f40523891d25d851a210bc083f885ebd8b620b7276ca6810f5f40b6"`
[INFO] running `"docker" "rm" "-f" "551eabf80f40523891d25d851a210bc083f885ebd8b620b7276ca6810f5f40b6"`
[INFO] [stdout] 551eabf80f40523891d25d851a210bc083f885ebd8b620b7276ca6810f5f40b6