[INFO] fetching crate iofs 0.0.8...
[INFO] checking iofs-0.0.8 against master#a3f76a26e045a760bb1163b7eab36872985242d5 for pr-130930
[INFO] extracting crate iofs 0.0.8 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate iofs 0.0.8 on toolchain a3f76a26e045a760bb1163b7eab36872985242d5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iofs 0.0.8
[INFO] finished tweaking crates.io crate iofs 0.0.8
[INFO] tweaked toml for crates.io crate iofs 0.0.8 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate iofs 0.0.8 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" "+a3f76a26e045a760bb1163b7eab36872985242d5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tungstenite v0.18.0
[INFO] [stderr]   Downloaded pin-project-internal v1.1.2
[INFO] [stderr]   Downloaded tokio-stream v0.1.14
[INFO] [stderr]   Downloaded mime_guess v2.0.4
[INFO] [stderr]   Downloaded pin-project v1.1.2
[INFO] [stderr]   Downloaded rustls-pemfile v1.0.3
[INFO] [stderr]   Downloaded tokio-tungstenite v0.18.0
[INFO] [stderr]   Downloaded headers v0.3.8
[INFO] [stderr]   Downloaded warp v0.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 732f3f888c52b32a1dba64908927925ae849645af51ee3761be3e2d6b1739f47
[INFO] running `Command { std: "docker" "start" "-a" "732f3f888c52b32a1dba64908927925ae849645af51ee3761be3e2d6b1739f47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "732f3f888c52b32a1dba64908927925ae849645af51ee3761be3e2d6b1739f47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "732f3f888c52b32a1dba64908927925ae849645af51ee3761be3e2d6b1739f47", kill_on_drop: false }`
[INFO] [stdout] 732f3f888c52b32a1dba64908927925ae849645af51ee3761be3e2d6b1739f47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+a3f76a26e045a760bb1163b7eab36872985242d5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20b94df24c75b69d1a81d4d5b7b5c20e6c59747c5baad71c1ed8c7134542fe86
[INFO] running `Command { std: "docker" "start" "-a" "20b94df24c75b69d1a81d4d5b7b5c20e6c59747c5baad71c1ed8c7134542fe86", kill_on_drop: false }`
[INFO] [stderr]     Checking iofs v0.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `and`, `with`, and `append` are never used
[INFO] [stdout]  --> src/fs/other.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait And {
[INFO] [stdout]   |           --- methods in this trait
[INFO] [stdout] 5 |     type Output;
[INFO] [stdout] 6 |     fn and<T: Display>(self, other: T) -> Self::Output;
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 7 |     fn with<T: Display>(&self, other: T) -> Self::Output;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 8 |     fn append<T: Display>(self, other: Vec<T>) -> Self::Output;
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `trim_zero` is never used
[INFO] [stdout]   --> src/io/number.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub trait Trim {
[INFO] [stdout]    |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 42 |     fn trim_zero(&mut self);
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `and`, `with`, and `append` are never used
[INFO] [stdout]  --> src/fs/other.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait And {
[INFO] [stdout]   |           --- methods in this trait
[INFO] [stdout] 5 |     type Output;
[INFO] [stdout] 6 |     fn and<T: Display>(self, other: T) -> Self::Output;
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 7 |     fn with<T: Display>(&self, other: T) -> Self::Output;
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 8 |     fn append<T: Display>(self, other: Vec<T>) -> Self::Output;
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `trim_zero` is never used
[INFO] [stdout]   --> src/io/number.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub trait Trim {
[INFO] [stdout]    |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 42 |     fn trim_zero(&mut self);
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Find`
[INFO] [stdout]  --> examples/io.rs:3:25
[INFO] [stdout]   |
[INFO] [stdout] 3 |     prelude::{FileInfo, Find},
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fs::stream::FileWriteStream` and `prelude::FileInfo`
[INFO] [stdout]  --> examples/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use iofs::{prelude::FileInfo, fs::stream::FileWriteStream};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "20b94df24c75b69d1a81d4d5b7b5c20e6c59747c5baad71c1ed8c7134542fe86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20b94df24c75b69d1a81d4d5b7b5c20e6c59747c5baad71c1ed8c7134542fe86", kill_on_drop: false }`
[INFO] [stdout] 20b94df24c75b69d1a81d4d5b7b5c20e6c59747c5baad71c1ed8c7134542fe86