[INFO] fetching crate libtun 0.1.0...
[INFO] checking libtun-0.1.0 against beta for pr-78714
[INFO] extracting crate libtun 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate libtun 0.1.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libtun 0.1.0
[INFO] finished tweaking crates.io crate libtun 0.1.0
[INFO] tweaked toml for crates.io crate libtun 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b27ea179790e27b85ba44ee347b66644328a0e2f8d7edf7dc4fdff6fd1cae480
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b27ea179790e27b85ba44ee347b66644328a0e2f8d7edf7dc4fdff6fd1cae480", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b27ea179790e27b85ba44ee347b66644328a0e2f8d7edf7dc4fdff6fd1cae480", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b27ea179790e27b85ba44ee347b66644328a0e2f8d7edf7dc4fdff6fd1cae480", kill_on_drop: false }`
[INFO] [stdout] b27ea179790e27b85ba44ee347b66644328a0e2f8d7edf7dc4fdff6fd1cae480
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 45f03aa52e94695780d860083553a55ffb94f7ebb75954d14a32b4119bb1da3d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "45f03aa52e94695780d860083553a55ffb94f7ebb75954d14a32b4119bb1da3d", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-lite v0.1.11
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking polling v1.1.0
[INFO] [stderr]     Checking socket2 v0.3.16
[INFO] [stderr]    Compiling snafu-derive v0.6.9
[INFO] [stderr]     Checking ipnet v2.3.0
[INFO] [stderr]     Checking async-io v1.1.6
[INFO] [stderr]    Compiling cc v1.0.62
[INFO] [stderr]     Checking async-global-executor v1.4.3
[INFO] [stderr]     Checking blocking v0.4.7
[INFO] [stderr]     Checking async-std v1.7.0
[INFO] [stderr]     Checking smol v0.1.18
[INFO] [stderr]    Compiling libtun v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking snafu v0.6.9
[INFO] [stdout] warning: unused import: `libc`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use libc;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ErrorKind`, `Error`
[INFO] [stdout]  --> src/lib.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Error, ErrorKind};
[INFO] [stdout]   |               ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LittleEndian`
[INFO] [stdout]  --> src/packet.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 | use byteorder::{BigEndian, LittleEndian, ReadBytesExt, WriteBytesExt};
[INFO] [stdout]   |                            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/raw.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/raw/raw_linux.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AddrParseError`
[INFO] [stdout]  --> src/systun.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ipnet::{AddrParseError, IpNet};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/systun.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/systun.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{Error, Read, Write};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Thread`
[INFO] [stdout]   --> src/systun.rs:11:31
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::thread::{JoinHandle, Thread};
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LittleEndian`
[INFO] [stdout]  --> src/protocol/icmp.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use byteorder::{BigEndian, LittleEndian, ReadBytesExt, WriteBytesExt};
[INFO] [stdout]   |                            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use libc;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ErrorKind`, `Error`
[INFO] [stdout]  --> src/lib.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Error, ErrorKind};
[INFO] [stdout]   |               ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LittleEndian`
[INFO] [stdout]  --> src/packet.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 | use byteorder::{BigEndian, LittleEndian, ReadBytesExt, WriteBytesExt};
[INFO] [stdout]   |                            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/raw.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/raw/raw_linux.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AddrParseError`
[INFO] [stdout]  --> src/systun.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use ipnet::{AddrParseError, IpNet};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/systun.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/systun.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::{Error, Read, Write};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Thread`
[INFO] [stdout]   --> src/systun.rs:11:31
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::thread::{JoinHandle, Thread};
[INFO] [stdout]    |                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `LittleEndian`
[INFO] [stdout]  --> src/protocol/icmp.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use byteorder::{BigEndian, LittleEndian, ReadBytesExt, WriteBytesExt};
[INFO] [stdout]   |                            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `take_reader` found for mutable reference `&mut raw_linux::RawTun` in the current scope
[INFO] [stdout]    --> src/systun.rs:168:26
[INFO] [stdout]     |
[INFO] [stdout] 168 |     let raw_reader = raw.take_reader().unwrap();
[INFO] [stdout]     |                          ^^^^^^^^^^^ method not found in `&mut raw_linux::RawTun`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `take_writer` found for mutable reference `&mut raw_linux::RawTun` in the current scope
[INFO] [stdout]    --> src/systun.rs:170:26
[INFO] [stdout]     |
[INFO] [stdout] 170 |     let raw_writer = raw.take_writer().unwrap();
[INFO] [stdout]     |                          ^^^^^^^^^^^ method not found in `&mut raw_linux::RawTun`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `reader` found for struct `systun::Systun` in the current scope
[INFO] [stdout]   --> src/test.rs:19:24
[INFO] [stdout]    |
[INFO] [stdout] 19 |   let mut reader = tun.reader();
[INFO] [stdout]    |                        ^^^^^^ method not found in `systun::Systun`
[INFO] [stdout]    | 
[INFO] [stdout]   ::: src/systun.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Systun {
[INFO] [stdout]    | ----------------- method `reader` not found for this
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]    = note: the following trait defines an item `reader`, perhaps you need to implement it:
[INFO] [stdout]            candidate #1: `gimli::read::Section`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/packet.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{Cursor, Write};
[INFO] [stdout]   |                       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `async_std::prelude`
[INFO] [stdout]   --> src/systun.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use async_std::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libtun`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0599]: no method named `take_reader` found for mutable reference `&mut raw_linux::RawTun` in the current scope
[INFO] [stdout]    --> src/systun.rs:168:26
[INFO] [stdout]     |
[INFO] [stdout] 168 |     let raw_reader = raw.take_reader().unwrap();
[INFO] [stdout]     |                          ^^^^^^^^^^^ method not found in `&mut raw_linux::RawTun`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `take_writer` found for mutable reference `&mut raw_linux::RawTun` in the current scope
[INFO] [stdout]    --> src/systun.rs:170:26
[INFO] [stdout]     |
[INFO] [stdout] 170 |     let raw_writer = raw.take_writer().unwrap();
[INFO] [stdout]     |                          ^^^^^^^^^^^ method not found in `&mut raw_linux::RawTun`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/packet.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{Cursor, Write};
[INFO] [stdout]   |                       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `async_std::prelude`
[INFO] [stdout]   --> src/systun.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use async_std::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "45f03aa52e94695780d860083553a55ffb94f7ebb75954d14a32b4119bb1da3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45f03aa52e94695780d860083553a55ffb94f7ebb75954d14a32b4119bb1da3d", kill_on_drop: false }`
[INFO] [stdout] 45f03aa52e94695780d860083553a55ffb94f7ebb75954d14a32b4119bb1da3d