[INFO] cloning repository https://github.com/ianc02/file_system [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ianc02/file_system" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianc02%2Ffile_system", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianc02%2Ffile_system'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 0d5e874aeecf10b751e1e961580c27b5c74e766b [INFO] checking ianc02/file_system against try#9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 for pr-129249 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fianc02%2Ffile_system" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ianc02/file_system on toolchain 9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ianc02/file_system [INFO] finished tweaking git repo https://github.com/ianc02/file_system [INFO] tweaked toml for git repo https://github.com/ianc02/file_system written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/ianc02/file_system already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 534c4fea2a7fa3759ff9686ab64af8e793e27ad6449ac3b44bb909e5e6f4109f [INFO] running `Command { std: "docker" "start" "-a" "534c4fea2a7fa3759ff9686ab64af8e793e27ad6449ac3b44bb909e5e6f4109f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "534c4fea2a7fa3759ff9686ab64af8e793e27ad6449ac3b44bb909e5e6f4109f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "534c4fea2a7fa3759ff9686ab64af8e793e27ad6449ac3b44bb909e5e6f4109f", kill_on_drop: false }` [INFO] [stdout] 534c4fea2a7fa3759ff9686ab64af8e793e27ad6449ac3b44bb909e5e6f4109f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 81e9526823090dd966520dce2deca893bdf5920eadb56a4f66d5e99254d78b49 [INFO] running `Command { std: "docker" "start" "-a" "81e9526823090dd966520dce2deca893bdf5920eadb56a4f66d5e99254d78b49", kill_on_drop: false }` [INFO] [stderr] Checking ramdisk v0.1.4 (https://github.com/gjf2a/ramdisk#da8347c3) [INFO] [stderr] Checking file_system v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `inode_num` is never read [INFO] [stdout] --> src/lib.rs:318:17 [INFO] [stdout] | [INFO] [stdout] 318 | let mut inode_num = 0; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `buffer` [INFO] [stdout] --> src/lib.rs:532:13 [INFO] [stdout] | [INFO] [stdout] 532 | let mut buffer = [0; BLOCK_SIZE]; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:532:9 [INFO] [stdout] | [INFO] [stdout] 532 | let mut buffer = [0; BLOCK_SIZE]; [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `break_flag` [INFO] [stdout] --> src/lib.rs:594:13 [INFO] [stdout] | [INFO] [stdout] 594 | let mut break_flag = false; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_break_flag` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:594:9 [INFO] [stdout] | [INFO] [stdout] 594 | let mut break_flag = false; [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:751:17 [INFO] [stdout] | [INFO] [stdout] 751 | let mut inode_for_file_entry = Inode [INFO] [stdout] | ----^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `user_buffer_count` [INFO] [stdout] --> src/lib.rs:824:17 [INFO] [stdout] | [INFO] [stdout] 824 | let mut user_buffer_count = 0; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_user_buffer_count` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `cur_buf` [INFO] [stdout] --> src/lib.rs:825:17 [INFO] [stdout] | [INFO] [stdout] 825 | let mut cur_buf = [0 as u8;BLOCK_SIZE]; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cur_buf` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:815:13 [INFO] [stdout] | [INFO] [stdout] 815 | let mut pre_file_to_read_from = self.open[fd]; [INFO] [stdout] | ----^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:824:13 [INFO] [stdout] | [INFO] [stdout] 824 | let mut user_buffer_count = 0; [INFO] [stdout] | ----^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:825:13 [INFO] [stdout] | [INFO] [stdout] 825 | let mut cur_buf = [0 as u8;BLOCK_SIZE]; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:830:13 [INFO] [stdout] | [INFO] [stdout] 830 | let mut all_inode_blocks = &self.file_content_buffer[inode_start..inode_stop]; [INFO] [stdout] | ----^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `block_count` is assigned to, but never used [INFO] [stdout] --> src/lib.rs:916:17 [INFO] [stdout] | [INFO] [stdout] 916 | let mut block_count = 2; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_block_count` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `c` is assigned to, but never used [INFO] [stdout] --> src/lib.rs:917:17 [INFO] [stdout] | [INFO] [stdout] 917 | let mut c = 0; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_c` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `bytes_written` is assigned to, but never used [INFO] [stdout] --> src/lib.rs:918:17 [INFO] [stdout] | [INFO] [stdout] 918 | let mut bytes_written = 0; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_bytes_written` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `inode_num` is never read [INFO] [stdout] --> src/lib.rs:318:17 [INFO] [stdout] | [INFO] [stdout] 318 | let mut inode_num = 0; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:979:17 [INFO] [stdout] | [INFO] [stdout] 979 | let mut file = file.unwrap(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `inode` is never read [INFO] [stdout] --> src/lib.rs:34:5 [INFO] [stdout] | [INFO] [stdout] 33 | pub struct FileInfo { [INFO] [stdout] | -------- field in this struct [INFO] [stdout] 34 | inode: Inode, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `FileInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `block_buffer` is never read [INFO] [stdout] --> src/lib.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 54 | pub struct FileSystem< [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 65 | block_buffer: [u8; BLOCK_SIZE], [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `FileSystem` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this conversion is useless `u8` to `u8` [INFO] [stdout] --> src/lib.rs:773:27 [INFO] [stdout] | [INFO] [stdout] 773 | current = inode_for_file_entry.blocks[c2].into(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[deny(self_type_conversion)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `buffer` [INFO] [stdout] --> src/lib.rs:532:13 [INFO] [stdout] | [INFO] [stdout] 532 | let mut buffer = [0; BLOCK_SIZE]; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:532:9 [INFO] [stdout] | [INFO] [stdout] 532 | let mut buffer = [0; BLOCK_SIZE]; [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `break_flag` [INFO] [stdout] --> src/lib.rs:594:13 [INFO] [stdout] | [INFO] [stdout] 594 | let mut break_flag = false; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_break_flag` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:594:9 [INFO] [stdout] | [INFO] [stdout] 594 | let mut break_flag = false; [INFO] [stdout] | ----^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:751:17 [INFO] [stdout] | [INFO] [stdout] 751 | let mut inode_for_file_entry = Inode [INFO] [stdout] | ----^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `file_system` (lib) due to 1 previous error; 18 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unused variable: `user_buffer_count` [INFO] [stdout] --> src/lib.rs:824:17 [INFO] [stdout] | [INFO] [stdout] 824 | let mut user_buffer_count = 0; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_user_buffer_count` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `cur_buf` [INFO] [stdout] --> src/lib.rs:825:17 [INFO] [stdout] | [INFO] [stdout] 825 | let mut cur_buf = [0 as u8;BLOCK_SIZE]; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cur_buf` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:815:13 [INFO] [stdout] | [INFO] [stdout] 815 | let mut pre_file_to_read_from = self.open[fd]; [INFO] [stdout] | ----^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:824:13 [INFO] [stdout] | [INFO] [stdout] 824 | let mut user_buffer_count = 0; [INFO] [stdout] | ----^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:825:13 [INFO] [stdout] | [INFO] [stdout] 825 | let mut cur_buf = [0 as u8;BLOCK_SIZE]; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:830:13 [INFO] [stdout] | [INFO] [stdout] 830 | let mut all_inode_blocks = &self.file_content_buffer[inode_start..inode_stop]; [INFO] [stdout] | ----^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `block_count` is assigned to, but never used [INFO] [stdout] --> src/lib.rs:916:17 [INFO] [stdout] | [INFO] [stdout] 916 | let mut block_count = 2; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_block_count` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `c` is assigned to, but never used [INFO] [stdout] --> src/lib.rs:917:17 [INFO] [stdout] | [INFO] [stdout] 917 | let mut c = 0; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_c` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `bytes_written` is assigned to, but never used [INFO] [stdout] --> src/lib.rs:918:17 [INFO] [stdout] | [INFO] [stdout] 918 | let mut bytes_written = 0; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_bytes_written` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:979:17 [INFO] [stdout] | [INFO] [stdout] 979 | let mut file = file.unwrap(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `inode` is never read [INFO] [stdout] --> src/lib.rs:34:5 [INFO] [stdout] | [INFO] [stdout] 33 | pub struct FileInfo { [INFO] [stdout] | -------- field in this struct [INFO] [stdout] 34 | inode: Inode, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `FileInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `block_buffer` is never read [INFO] [stdout] --> src/lib.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 54 | pub struct FileSystem< [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 65 | block_buffer: [u8; BLOCK_SIZE], [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `FileSystem` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this conversion is useless `u8` to `u8` [INFO] [stdout] --> src/lib.rs:773:27 [INFO] [stdout] | [INFO] [stdout] 773 | current = inode_for_file_entry.blocks[c2].into(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[deny(self_type_conversion)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `file_system` (lib test) due to 1 previous error; 18 warnings emitted [INFO] running `Command { std: "docker" "inspect" "81e9526823090dd966520dce2deca893bdf5920eadb56a4f66d5e99254d78b49", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "81e9526823090dd966520dce2deca893bdf5920eadb56a4f66d5e99254d78b49", kill_on_drop: false }` [INFO] [stdout] 81e9526823090dd966520dce2deca893bdf5920eadb56a4f66d5e99254d78b49