[INFO] cloning repository https://github.com/JonathanMurray/os-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JonathanMurray/os-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonathanMurray%2Fos-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonathanMurray%2Fos-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a1fa286964c1ee0282a9b028b9b2d7c827177f7c [INFO] checking JonathanMurray/os-rs/a1fa286964c1ee0282a9b028b9b2d7c827177f7c against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonathanMurray%2Fos-rs" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/JonathanMurray/os-rs on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/JonathanMurray/os-rs [INFO] finished tweaking git repo https://github.com/JonathanMurray/os-rs [INFO] tweaked toml for git repo https://github.com/JonathanMurray/os-rs written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/JonathanMurray/os-rs 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 61f9fabe90255b4ecc8a383a64632f955a0833cec62eb5da8a8d7dc4f849e5dc [INFO] running `Command { std: "docker" "start" "-a" "61f9fabe90255b4ecc8a383a64632f955a0833cec62eb5da8a8d7dc4f849e5dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "61f9fabe90255b4ecc8a383a64632f955a0833cec62eb5da8a8d7dc4f849e5dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "61f9fabe90255b4ecc8a383a64632f955a0833cec62eb5da8a8d7dc4f849e5dc", kill_on_drop: false }` [INFO] [stdout] 61f9fabe90255b4ecc8a383a64632f955a0833cec62eb5da8a8d7dc4f849e5dc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 31b1e0e4f64d0844077ee0f82e60e0916ada10165fe8c5ecd27035dfe9c98f8c [INFO] running `Command { std: "docker" "start" "-a" "31b1e0e4f64d0844077ee0f82e60e0916ada10165fe8c5ecd27035dfe9c98f8c", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.29 [INFO] [stderr] Compiling libc v0.2.101 [INFO] [stderr] Compiling syn v1.0.75 [INFO] [stderr] Compiling futures-core v0.3.17 [INFO] [stderr] Compiling futures-macro v0.3.17 [INFO] [stderr] Compiling futures-channel v0.3.17 [INFO] [stderr] Compiling futures-task v0.3.17 [INFO] [stderr] Compiling futures-util v0.3.17 [INFO] [stderr] Checking futures-sink v0.3.17 [INFO] [stderr] Checking instant v0.1.10 [INFO] [stderr] Checking smallvec v1.6.1 [INFO] [stderr] Checking futures-io v0.3.17 [INFO] [stderr] Compiling tokio v1.11.0 [INFO] [stderr] Checking numtoa v0.1.0 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking parking_lot_core v0.8.5 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking signal-hook-registry v1.4.0 [INFO] [stderr] Checking mio v0.7.13 [INFO] [stderr] Checking termion v1.5.6 [INFO] [stderr] Checking parking_lot v0.11.2 [INFO] [stderr] Compiling tokio-macros v1.3.0 [INFO] [stderr] Checking futures-executor v0.3.17 [INFO] [stderr] Checking futures v0.3.17 [INFO] [stderr] Checking os-rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/filesystems/regularfs.rs:214:21 [INFO] [stdout] | [INFO] [stdout] 214 | if let Some(mut inode) = self.inode_mut(inode_number) { [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: variable does not need to be mutable [INFO] [stdout] --> src/vfs.rs:429:21 [INFO] [stdout] | [INFO] [stdout] 429 | let mut open_file = self.get_open_file_mut(open_file_id); [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/vfs.rs:437:21 [INFO] [stdout] | [INFO] [stdout] 437 | let mut open_file = self.get_open_file_mut(open_file_id); [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/filesystems/mod.rs:23:16 [INFO] [stdout] | [INFO] [stdout] 23 | Unexpected(String), [INFO] [stdout] | ---------- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `WriteError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 23 | Unexpected(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `parent_inode_id` is never read [INFO] [stdout] --> src/filesystems/devfs.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 18 | pub struct DevFilesystem { [INFO] [stdout] | ------------- field in this struct [INFO] [stdout] 19 | parent_inode_id: InodeIdentifier, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `DevFilesystem` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/filesystems/regularfs.rs:214:21 [INFO] [stdout] | [INFO] [stdout] 214 | if let Some(mut inode) = self.inode_mut(inode_number) { [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: variable does not need to be mutable [INFO] [stdout] --> src/vfs.rs:429:21 [INFO] [stdout] | [INFO] [stdout] 429 | let mut open_file = self.get_open_file_mut(open_file_id); [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/vfs.rs:437:21 [INFO] [stdout] | [INFO] [stdout] 437 | let mut open_file = self.get_open_file_mut(open_file_id); [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/filesystems/mod.rs:23:16 [INFO] [stdout] | [INFO] [stdout] 23 | Unexpected(String), [INFO] [stdout] | ---------- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `WriteError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 23 | Unexpected(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `parent_inode_id` is never read [INFO] [stdout] --> src/filesystems/devfs.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 18 | pub struct DevFilesystem { [INFO] [stdout] | ------------- field in this struct [INFO] [stdout] 19 | parent_inode_id: InodeIdentifier, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `DevFilesystem` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.27s [INFO] running `Command { std: "docker" "inspect" "31b1e0e4f64d0844077ee0f82e60e0916ada10165fe8c5ecd27035dfe9c98f8c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "31b1e0e4f64d0844077ee0f82e60e0916ada10165fe8c5ecd27035dfe9c98f8c", kill_on_drop: false }` [INFO] [stdout] 31b1e0e4f64d0844077ee0f82e60e0916ada10165fe8c5ecd27035dfe9c98f8c