[INFO] fetching crate tfio 0.1.32...
[INFO] checking tfio-0.1.32 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate tfio 0.1.32 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate tfio 0.1.32 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tfio 0.1.32
[INFO] finished tweaking crates.io crate tfio 0.1.32
[INFO] tweaked toml for crates.io crate tfio 0.1.32 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages
[INFO] [stderr]       Adding uuid v0.8.2 (latest: v1.8.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fecf48c49296af577caebb4147b570ec7e2868f280e69ccf0eb0006f025d8456
[INFO] running `Command { std: "docker" "start" "-a" "fecf48c49296af577caebb4147b570ec7e2868f280e69ccf0eb0006f025d8456", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fecf48c49296af577caebb4147b570ec7e2868f280e69ccf0eb0006f025d8456", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fecf48c49296af577caebb4147b570ec7e2868f280e69ccf0eb0006f025d8456", kill_on_drop: false }`
[INFO] [stdout] fecf48c49296af577caebb4147b570ec7e2868f280e69ccf0eb0006f025d8456
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34302dd79a0f69945db5ef8b908b5005d060a5f374e7868d0b9708b10aee649d
[INFO] running `Command { std: "docker" "start" "-a" "34302dd79a0f69945db5ef8b908b5005d060a5f374e7868d0b9708b10aee649d", kill_on_drop: false }`
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking tfio v0.1.32 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `io` is imported redundantly
[INFO] [stdout]   --> src/append.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     use std::io;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 84 |
[INFO] [stdout] 85 |     use super::*;
[INFO] [stdout]    |         -------- the item `io` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `fs` is imported redundantly
[INFO] [stdout]    --> src/copy.rs:103:19
[INFO] [stdout]     |
[INFO] [stdout] 102 |     use super::*;
[INFO] [stdout]     |         -------- the item `fs` is already imported here
[INFO] [stdout] 103 |     use std::fs::{self, File};
[INFO] [stdout]     |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Path` is imported redundantly
[INFO] [stdout]    --> src/copy.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     use super::*;
[INFO] [stdout]     |         -------- the item `Path` is already imported here
[INFO] [stdout] 103 |     use std::fs::{self, File};
[INFO] [stdout] 104 |     use std::path::Path;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Path` is imported redundantly
[INFO] [stdout]   --> src/create.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     use super::*;
[INFO] [stdout]    |         -------- the item `Path` is already imported here
[INFO] [stdout] 64 |     use std::path::Path;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Path` is imported redundantly
[INFO] [stdout]    --> src/delete.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |     use super::*;
[INFO] [stdout]     |         -------- the item `Path` is already imported here
[INFO] [stdout] 128 |     use std::fs::File;
[INFO] [stdout] 129 |     use std::path::Path;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `fs` is imported redundantly
[INFO] [stdout]   --> src/move.rs:47:19
[INFO] [stdout]    |
[INFO] [stdout] 47 |     use std::fs::{self, File};
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     use super::*;
[INFO] [stdout]    |         -------- the item `fs` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Path` is imported redundantly
[INFO] [stdout]   --> src/move.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     use std::path::Path;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 49 |
[INFO] [stdout] 50 |     use super::*;
[INFO] [stdout]    |         -------- the item `Path` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on `Self: Drop` are most likely incorrect, consider instead using `std::mem::needs_drop` to detect whether a type can be trivially dropped
[INFO] [stdout]   --> src/lib.rs:90:55
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub trait DirectoryOperation: RollbackableOperation + Drop {
[INFO] [stdout]    |                                                       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(drop_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on `Self: Drop` are most likely incorrect, consider instead using `std::mem::needs_drop` to detect whether a type can be trivially dropped
[INFO] [stdout]    --> src/lib.rs:140:56
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub trait SingleFileOperation: RollbackableOperation + Drop {
[INFO] [stdout]     |                                                        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on `Self: Drop` are most likely incorrect, consider instead using `std::mem::needs_drop` to detect whether a type can be trivially dropped
[INFO] [stdout]   --> src/lib.rs:90:55
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub trait DirectoryOperation: RollbackableOperation + Drop {
[INFO] [stdout]    |                                                       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(drop_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on `Self: Drop` are most likely incorrect, consider instead using `std::mem::needs_drop` to detect whether a type can be trivially dropped
[INFO] [stdout]    --> src/lib.rs:140:56
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub trait SingleFileOperation: RollbackableOperation + Drop {
[INFO] [stdout]     |                                                        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "34302dd79a0f69945db5ef8b908b5005d060a5f374e7868d0b9708b10aee649d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34302dd79a0f69945db5ef8b908b5005d060a5f374e7868d0b9708b10aee649d", kill_on_drop: false }`
[INFO] [stdout] 34302dd79a0f69945db5ef8b908b5005d060a5f374e7868d0b9708b10aee649d