[INFO] fetching crate mail_slot 0.1.3...
[INFO] testing mail_slot-0.1.3 against 1.90.0 for beta-1.91-3
[INFO] extracting crate mail_slot 0.1.3 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate mail_slot 0.1.3
[INFO] finished tweaking crates.io crate mail_slot 0.1.3
[INFO] tweaked toml for crates.io crate mail_slot 0.1.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mail_slot 0.1.3 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mail_slot 0.1.3 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2288bf89fa6b9eecc0a1da857a77b3f5451e05f28956fdf626030790beb8b46
[INFO] running `Command { std: "docker" "start" "-a" "c2288bf89fa6b9eecc0a1da857a77b3f5451e05f28956fdf626030790beb8b46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2288bf89fa6b9eecc0a1da857a77b3f5451e05f28956fdf626030790beb8b46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2288bf89fa6b9eecc0a1da857a77b3f5451e05f28956fdf626030790beb8b46", kill_on_drop: false }`
[INFO] [stdout] c2288bf89fa6b9eecc0a1da857a77b3f5451e05f28956fdf626030790beb8b46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 073244c62251958aae6feb0d5fe5bb7c3bb31eae5fa4f23c409a3bbeb1692a96
[INFO] running `Command { std: "docker" "start" "-a" "073244c62251958aae6feb0d5fe5bb7c3bb31eae5fa4f23c409a3bbeb1692a96", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]    Compiling mail_slot v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: could not find `windows` in `os`
[INFO] [stdout]   --> src/lib.rs:19:39
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::{ffi::OsStr, iter::once, os::windows::ffi::OsStrExt};
[INFO] [stdout]    |                                       ^^^^^^^ could not find `windows` in `os`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/os/mod.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item is gated here
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/os/mod.rs:120:10
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item is gated here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `windows` in `os`
[INFO] [stdout]  --> src/server.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     os::windows::io::{AsRawHandle, FromRawHandle},
[INFO] [stdout]   |         ^^^^^^^ could not find `windows` in `os`
[INFO] [stdout]   |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]  --> /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/os/mod.rs:56:5
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item is gated here
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]  --> /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/os/mod.rs:120:10
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item is gated here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `um` in `winapi`
[INFO] [stdout]  --> src/server.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 | use winapi::um::{
[INFO] [stdout]   |             ^^ could not find `um` in `winapi`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_raw_handle` found for struct `File` in the current scope
[INFO] [stdout]   --> src/server.rs:41:29
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 self.handle.as_raw_handle() as _,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `as_raw_fd` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 41 -                 self.handle.as_raw_handle() as _,
[INFO] [stdout] 41 +                 self.handle.as_raw_fd() as _,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `from_raw_handle` found for struct `File` in the current scope
[INFO] [stdout]   --> src/server.rs:69:31
[INFO] [stdout]    |
[INFO] [stdout] 69 |             Ok(std::fs::File::from_raw_handle(slot as _))
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^ function or associated item not found in `File`
[INFO] [stdout]    |
[INFO] [stdout] note: if you're trying to build a new `File` consider using one of the following associated functions:
[INFO] [stdout]       File::open
[INFO] [stdout]       File::create
[INFO] [stdout]       File::create_new
[INFO] [stdout]   --> /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/fs.rs:452:5
[INFO] [stdout] help: there is an associated function `from_raw_fd` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 69 -             Ok(std::fs::File::from_raw_handle(slot as _))
[INFO] [stdout] 69 +             Ok(std::fs::File::from_raw_fd(slot as _))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `encode_wide` found for reference `&OsStr` in the current scope
[INFO] [stdout]   --> src/lib.rs:86:19
[INFO] [stdout]    |
[INFO] [stdout] 86 |     OsStr::new(s).encode_wide().chain(once(0)).collect()
[INFO] [stdout]    |                   ^^^^^^^^^^^ method not found in `&OsStr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mail_slot` (lib) due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "073244c62251958aae6feb0d5fe5bb7c3bb31eae5fa4f23c409a3bbeb1692a96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "073244c62251958aae6feb0d5fe5bb7c3bb31eae5fa4f23c409a3bbeb1692a96", kill_on_drop: false }`
[INFO] [stdout] 073244c62251958aae6feb0d5fe5bb7c3bb31eae5fa4f23c409a3bbeb1692a96