[INFO] fetching crate wasmer-vfs 3.1.1...
[INFO] checking wasmer-vfs-3.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate wasmer-vfs 3.1.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate wasmer-vfs 3.1.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wasmer-vfs 3.1.1
[INFO] finished tweaking crates.io crate wasmer-vfs 3.1.1
[INFO] tweaked toml for crates.io crate wasmer-vfs 3.1.1 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 68 packages
[INFO] [stderr]       Adding any_ascii v0.1.7 (latest: v0.3.2)
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
[INFO] [stderr]       Adding ctor v0.1.26 (latest: v0.2.7)
[INFO] [stderr]       Adding erased-serde v0.3.31 (latest: v0.4.4)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding half v1.8.3 (latest: v2.4.0)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding inventory v0.2.3 (latest: v0.3.15)
[INFO] [stderr]       Adding path-clean v0.1.0 (latest: v1.0.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding typetag v0.1.8 (latest: v0.2.16)
[INFO] [stderr]       Adding typetag-impl v0.1.8 (latest: v0.2.16)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding webc v3.0.1 (latest: v5.8.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded path-clean v0.1.0
[INFO] [stderr]   Downloaded inventory v0.2.3
[INFO] [stderr]   Downloaded typetag-impl v0.1.8
[INFO] [stderr]   Downloaded lexical-sort v0.3.1
[INFO] [stderr]   Downloaded webc v3.0.1
[INFO] [stderr]   Downloaded typetag v0.1.8
[INFO] [stderr]   Downloaded any_ascii v0.1.7
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bbe7bf247b810c30427fc7625d77415e80276531522dbdb0e305a1d1aee2d40b
[INFO] running `Command { std: "docker" "start" "-a" "bbe7bf247b810c30427fc7625d77415e80276531522dbdb0e305a1d1aee2d40b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbe7bf247b810c30427fc7625d77415e80276531522dbdb0e305a1d1aee2d40b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbe7bf247b810c30427fc7625d77415e80276531522dbdb0e305a1d1aee2d40b", kill_on_drop: false }`
[INFO] [stdout] bbe7bf247b810c30427fc7625d77415e80276531522dbdb0e305a1d1aee2d40b
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 024fe1115cf6d335b5766abe3d895882c2f23ee0157c57268e6f470170f7aab0
[INFO] running `Command { std: "docker" "start" "-a" "024fe1115cf6d335b5766abe3d895882c2f23ee0157c57268e6f470170f7aab0", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking any_ascii v0.1.7
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking path-clean v0.1.0
[INFO] [stderr]     Checking leb128 v0.2.5
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking lexical-sort v0.3.1
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking webc v3.0.1
[INFO] [stderr]     Checking wasmer-vfs v3.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Metadata` is imported redundantly
[INFO] [stdout]  --> src/mem_fs/file_opener.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `Metadata` is already imported here
[INFO] [stdout] 2 | use crate::{FileType, FsError, Metadata, OpenOptionsConfig, Result, VirtualFile};
[INFO] [stdout]   |                                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Metadata` is imported redundantly
[INFO] [stdout]  --> src/mem_fs/filesystem.rs:4:42
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `Metadata` is already imported here
[INFO] [stdout] 4 | use crate::{DirEntry, FileType, FsError, Metadata, OpenOptions, ReadDir, Result};
[INFO] [stdout]   |                                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `OsString` is imported redundantly
[INFO] [stdout]  --> src/mem_fs/filesystem.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `OsString` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 7 | use std::ffi::OsString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Metadata` is imported redundantly
[INFO] [stdout]  --> src/mem_fs/file_opener.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `Metadata` is already imported here
[INFO] [stdout] 2 | use crate::{FileType, FsError, Metadata, OpenOptionsConfig, Result, VirtualFile};
[INFO] [stdout]   |                                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Metadata` is imported redundantly
[INFO] [stdout]  --> src/mem_fs/filesystem.rs:4:42
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `Metadata` is already imported here
[INFO] [stdout] 4 | use crate::{DirEntry, FileType, FsError, Metadata, OpenOptions, ReadDir, Result};
[INFO] [stdout]   |                                          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `OsString` is imported redundantly
[INFO] [stdout]  --> src/mem_fs/filesystem.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `OsString` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 7 | use std::ffi::OsString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.53s
[INFO] running `Command { std: "docker" "inspect" "024fe1115cf6d335b5766abe3d895882c2f23ee0157c57268e6f470170f7aab0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "024fe1115cf6d335b5766abe3d895882c2f23ee0157c57268e6f470170f7aab0", kill_on_drop: false }`
[INFO] [stdout] 024fe1115cf6d335b5766abe3d895882c2f23ee0157c57268e6f470170f7aab0