[INFO] fetching crate mbfs 0.2.0...
[INFO] testing mbfs-0.2.0 against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] extracting crate mbfs 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate mbfs 0.2.0
[INFO] finished tweaking crates.io crate mbfs 0.2.0
[INFO] tweaked toml for crates.io crate mbfs 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mbfs 0.2.0 on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 18 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot v0.4.8
[INFO] [stderr]   Downloaded owning_ref v0.3.3
[INFO] [stderr]   Downloaded chashmap v2.2.2
[INFO] [stderr]   Downloaded parking_lot_core v0.2.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b466e6cb28dbabf583c14a5fa43baf945069a78c813649b03d34cdf5bd5d9013
[INFO] running `Command { std: "docker" "start" "-a" "b466e6cb28dbabf583c14a5fa43baf945069a78c813649b03d34cdf5bd5d9013", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b466e6cb28dbabf583c14a5fa43baf945069a78c813649b03d34cdf5bd5d9013", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b466e6cb28dbabf583c14a5fa43baf945069a78c813649b03d34cdf5bd5d9013", kill_on_drop: false }`
[INFO] [stdout] b466e6cb28dbabf583c14a5fa43baf945069a78c813649b03d34cdf5bd5d9013
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 891d3954b87e1be3e6711fd2aa715be8ab92249706b2f431e2b749f7676bc3d9
[INFO] running `Command { std: "docker" "start" "-a" "891d3954b87e1be3e6711fd2aa715be8ab92249706b2f431e2b749f7676bc3d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling parking_lot v0.4.8
[INFO] [stderr]    Compiling chashmap v2.2.2
[INFO] [stderr]    Compiling mbfs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `Command { std: "docker" "inspect" "891d3954b87e1be3e6711fd2aa715be8ab92249706b2f431e2b749f7676bc3d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "891d3954b87e1be3e6711fd2aa715be8ab92249706b2f431e2b749f7676bc3d9", kill_on_drop: false }`
[INFO] [stdout] 891d3954b87e1be3e6711fd2aa715be8ab92249706b2f431e2b749f7676bc3d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea5a0d4cf00ce378e2c8fa2c902f411738a148119d385852d5174f3224201d62
[INFO] running `Command { std: "docker" "start" "-a" "ea5a0d4cf00ce378e2c8fa2c902f411738a148119d385852d5174f3224201d62", kill_on_drop: false }`
[INFO] [stderr]    Compiling mbfs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "ea5a0d4cf00ce378e2c8fa2c902f411738a148119d385852d5174f3224201d62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea5a0d4cf00ce378e2c8fa2c902f411738a148119d385852d5174f3224201d62", kill_on_drop: false }`
[INFO] [stdout] ea5a0d4cf00ce378e2c8fa2c902f411738a148119d385852d5174f3224201d62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7feee4b33a54a4d89bc9aaab5ca5dbd68b5f9459676c7877d5722c99dcb2e104
[INFO] running `Command { std: "docker" "start" "-a" "7feee4b33a54a4d89bc9aaab5ca5dbd68b5f9459676c7877d5722c99dcb2e104", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mbfs-8ec8c32219bbed15)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test lib_test::tests::create_file_entry_success ... ok
[INFO] [stdout] test lib_test::tests::create_file_entry_failure ... ok
[INFO] [stdout] test lib_test::tests::file_handle_read ... ok
[INFO] [stdout] test lib_test::tests::read_from_file_entry_success ... ok
[INFO] [stdout] test lib_test::tests::read_file_repopulate_entry ... ok
[INFO] [stdout] test lib_test::tests::create_file_handle ... ok
[INFO] [stdout] test lib_test::tests::create_mbfs ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.21s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mbfs
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - FilePageEntry::read (line 102) ... FAILED
[INFO] [stdout] test src/lib.rs - FileHandle::read (line 189) ... FAILED
[INFO] [stdout] test src/lib.rs - FilePageEntry::new (line 74) ... FAILED
[INFO] [stdout] test src/lib.rs - MessageBasedFileSystem::open (line 269) ... FAILED
[INFO] [stdout] test src/lib.rs - FilePageEntry::populate_pages (line 143) ... FAILED
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] test src/lib.rs - MessageBasedFileSystem::run (line 288) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - FilePageEntry::read (line 102) stdout ----
[INFO] [stdout] error[E0425]: cannot find value `entry` in this scope
[INFO] [stdout]    --> src/lib.rs:103:11
[INFO] [stdout]     |
[INFO] [stdout] 103 | let res = entry.unwrap().read(path);
[INFO] [stdout]     |           ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected value, found built-in attribute `path`
[INFO] [stdout]    --> src/lib.rs:103:31
[INFO] [stdout]     |
[INFO] [stdout] 103 | let res = entry.unwrap().read(path);
[INFO] [stdout]     |                               ^^^^ not a value
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:106:12
[INFO] [stdout]     |
[INFO] [stdout] 106 |         if option.is_some() {
[INFO] [stdout]     |            ^^^^^^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0423, E0425.
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - FileHandle::read (line 189) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Arc`
[INFO] [stdout]    --> src/lib.rs:191:19
[INFO] [stdout]     |
[INFO] [stdout] 191 | let file_reader = Arc::new(Mutex::new(MessageBasedFileSystem::new()));
[INFO] [stdout]     |                   ^^^ use of undeclared type `Arc`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 188 + use std::sync::Arc;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Mutex`
[INFO] [stdout]    --> src/lib.rs:191:28
[INFO] [stdout]     |
[INFO] [stdout] 191 | let file_reader = Arc::new(Mutex::new(MessageBasedFileSystem::new()));
[INFO] [stdout]     |                            ^^^^^ use of undeclared type `Mutex`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]     |
[INFO] [stdout] 188 + use std::sync::Mutex;
[INFO] [stdout]     |
[INFO] [stdout] 188 + use std::sync::nonpoison::Mutex;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MessageBasedFileSystem`
[INFO] [stdout]    --> src/lib.rs:191:39
[INFO] [stdout]     |
[INFO] [stdout] 191 | let file_reader = Arc::new(Mutex::new(MessageBasedFileSystem::new()));
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^ use of undeclared type `MessageBasedFileSystem`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 188 + use mbfs::MessageBasedFileSystem;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - FilePageEntry::new (line 74) stdout ----
[INFO] [stdout] error[E0603]: struct `FilePageEntry` is private
[INFO] [stdout]   --> src/lib.rs:77:19
[INFO] [stdout]    |
[INFO] [stdout] 77 | let entry = mbfs::FilePageEntry::new(path, 4096, 16);
[INFO] [stdout]    |                   ^^^^^^^^^^^^^ private struct
[INFO] [stdout]    |
[INFO] [stdout] note: the struct `FilePageEntry` is defined here
[INFO] [stdout]   --> src/lib.rs:37:1
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct FilePageEntry {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0624]: associated function `new` is private
[INFO] [stdout]   --> src/lib.rs:77:34
[INFO] [stdout]    |
[INFO] [stdout] 77 | let entry = mbfs::FilePageEntry::new(path, 4096, 16);
[INFO] [stdout]    |                                  ^^^ private associated function
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn new(path: String, page_size: usize, max_pages: usize) -> io::Result<Self> {
[INFO] [stdout]    |     ---------------------------------------------------------------------------- private associated function defined here
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0603, E0624.
[INFO] [stdout] For more information about an error, try `rustc --explain E0603`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - MessageBasedFileSystem::open (line 269) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Arc`
[INFO] [stdout]    --> src/lib.rs:271:19
[INFO] [stdout]     |
[INFO] [stdout] 271 | let file_reader = Arc::new(Mutex::new(MessageBasedFileSystem::new()));
[INFO] [stdout]     |                   ^^^ use of undeclared type `Arc`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 268 + use std::sync::Arc;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Mutex`
[INFO] [stdout]    --> src/lib.rs:271:28
[INFO] [stdout]     |
[INFO] [stdout] 271 | let file_reader = Arc::new(Mutex::new(MessageBasedFileSystem::new()));
[INFO] [stdout]     |                            ^^^^^ use of undeclared type `Mutex`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]     |
[INFO] [stdout] 268 + use std::sync::Mutex;
[INFO] [stdout]     |
[INFO] [stdout] 268 + use std::sync::nonpoison::Mutex;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MessageBasedFileSystem`
[INFO] [stdout]    --> src/lib.rs:271:39
[INFO] [stdout]     |
[INFO] [stdout] 271 | let file_reader = Arc::new(Mutex::new(MessageBasedFileSystem::new()));
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^ use of undeclared type `MessageBasedFileSystem`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 268 + use mbfs::MessageBasedFileSystem;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - FilePageEntry::populate_pages (line 143) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `LinkedList`
[INFO] [stdout]    --> src/lib.rs:144:22
[INFO] [stdout]     |
[INFO] [stdout] 144 | let mut file_pages = LinkedList::new();
[INFO] [stdout]     |                      ^^^^^^^^^^ use of undeclared type `LinkedList`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 143 + use std::collections::LinkedList;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `populate_pages` in this scope
[INFO] [stdout]    --> src/lib.rs:145:1
[INFO] [stdout]     |
[INFO] [stdout] 145 | populate_pages("/test/file.txt".to_owned(), &mut file_pages, 5, 4096, 0);
[INFO] [stdout]     | ^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - MessageBasedFileSystem::run (line 288) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Arc`
[INFO] [stdout]    --> src/lib.rs:289:19
[INFO] [stdout]     |
[INFO] [stdout] 289 | let file_reader = Arc::new(Mutex::new(MessageBasedFileSystem::new()));
[INFO] [stdout]     |                   ^^^ use of undeclared type `Arc`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 288 + use std::sync::Arc;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Mutex`
[INFO] [stdout]    --> src/lib.rs:289:28
[INFO] [stdout]     |
[INFO] [stdout] 289 | let file_reader = Arc::new(Mutex::new(MessageBasedFileSystem::new()));
[INFO] [stdout]     |                            ^^^^^ use of undeclared type `Mutex`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]     |
[INFO] [stdout] 288 + use std::sync::Mutex;
[INFO] [stdout]     |
[INFO] [stdout] 288 + use std::sync::nonpoison::Mutex;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `MessageBasedFileSystem`
[INFO] [stdout]    --> src/lib.rs:289:39
[INFO] [stdout]     |
[INFO] [stdout] 289 | let file_reader = Arc::new(Mutex::new(MessageBasedFileSystem::new()));
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^ use of undeclared type `MessageBasedFileSystem`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 288 + use mbfs::MessageBasedFileSystem;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `thread`
[INFO] [stdout]    --> src/lib.rs:291:16
[INFO] [stdout]     |
[INFO] [stdout] 291 | let read_thr = thread::spawn(move || {
[INFO] [stdout]     |                ^^^^^^ use of unresolved module or unlinked crate `thread`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `thread`, use `cargo add thread` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 288 + use std::thread;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `thread`
[INFO] [stdout]    --> src/lib.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 296 |         thread::sleep(Duration::from_millis(1));
[INFO] [stdout]     |         ^^^^^^ use of unresolved module or unlinked crate `thread`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `thread`, use `cargo add thread` to add it to your `Cargo.toml`
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 288 + use std::thread;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Duration`
[INFO] [stdout]    --> src/lib.rs:296:23
[INFO] [stdout]     |
[INFO] [stdout] 296 |         thread::sleep(Duration::from_millis(1));
[INFO] [stdout]     |                       ^^^^^^^^ use of undeclared type `Duration`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 288 + use std::time::Duration;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - FileHandle::read (line 189)
[INFO] [stdout]     src/lib.rs - FilePageEntry::new (line 74)
[INFO] [stdout]     src/lib.rs - FilePageEntry::populate_pages (line 143)
[INFO] [stdout]     src/lib.rs - FilePageEntry::read (line 102)
[INFO] [stdout]     src/lib.rs - MessageBasedFileSystem::open (line 269)
[INFO] [stdout]     src/lib.rs - MessageBasedFileSystem::run (line 288)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 6 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.31s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7feee4b33a54a4d89bc9aaab5ca5dbd68b5f9459676c7877d5722c99dcb2e104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7feee4b33a54a4d89bc9aaab5ca5dbd68b5f9459676c7877d5722c99dcb2e104", kill_on_drop: false }`
[INFO] [stdout] 7feee4b33a54a4d89bc9aaab5ca5dbd68b5f9459676c7877d5722c99dcb2e104
