[INFO] fetching crate iofs 0.0.8...
[INFO] building iofs-0.0.8 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate iofs 0.0.8 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate iofs 0.0.8 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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-6-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.31
[INFO] [stderr]   Downloaded headers v0.3.8
[INFO] [stderr]   Downloaded serde v1.0.174
[INFO] [stderr]   Downloaded warp v0.3.5
[INFO] [stderr]   Downloaded serde_json v1.0.103
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcf1b548f519c780816ce9d2e6334522addc952ce068ed9d49ab29b7d0d781e5
[INFO] running `Command { std: "docker" "start" "-a" "bcf1b548f519c780816ce9d2e6334522addc952ce068ed9d49ab29b7d0d781e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcf1b548f519c780816ce9d2e6334522addc952ce068ed9d49ab29b7d0d781e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcf1b548f519c780816ce9d2e6334522addc952ce068ed9d49ab29b7d0d781e5", kill_on_drop: false }`
[INFO] [stdout] bcf1b548f519c780816ce9d2e6334522addc952ce068ed9d49ab29b7d0d781e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3ed13e85f7b3a7430bd90cac9dc472b162a09adf901eb778d2a7a82b4f67af9
[INFO] running `Command { std: "docker" "start" "-a" "e3ed13e85f7b3a7430bd90cac9dc472b162a09adf901eb778d2a7a82b4f67af9", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "e3ed13e85f7b3a7430bd90cac9dc472b162a09adf901eb778d2a7a82b4f67af9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3ed13e85f7b3a7430bd90cac9dc472b162a09adf901eb778d2a7a82b4f67af9", kill_on_drop: false }`
[INFO] [stdout] e3ed13e85f7b3a7430bd90cac9dc472b162a09adf901eb778d2a7a82b4f67af9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1abf0e9d286cc4df94da4d3641c972d4034ee779405bcec8a630597d3f6c4a42
[INFO] running `Command { std: "docker" "start" "-a" "1abf0e9d286cc4df94da4d3641c972d4034ee779405bcec8a630597d3f6c4a42", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 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: 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: 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "1abf0e9d286cc4df94da4d3641c972d4034ee779405bcec8a630597d3f6c4a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1abf0e9d286cc4df94da4d3641c972d4034ee779405bcec8a630597d3f6c4a42", kill_on_drop: false }`
[INFO] [stdout] 1abf0e9d286cc4df94da4d3641c972d4034ee779405bcec8a630597d3f6c4a42