[INFO] fetching crate libc_tools 0.1.3...
[INFO] testing libc_tools-0.1.3 against 1.54.0 for beta-1.55-1
[INFO] extracting crate libc_tools 0.1.3 into /workspace/builds/worker-92/source
[INFO] validating manifest of crates.io crate libc_tools 0.1.3 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libc_tools 0.1.3
[INFO] finished tweaking crates.io crate libc_tools 0.1.3
[INFO] tweaked toml for crates.io crate libc_tools 0.1.3 written to /workspace/builds/worker-92/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b415373408087a029d23560e0f43c7c985158ce9f3818057d1c74d45f6b618f0
[INFO] running `Command { std: "docker" "start" "-a" "b415373408087a029d23560e0f43c7c985158ce9f3818057d1c74d45f6b618f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b415373408087a029d23560e0f43c7c985158ce9f3818057d1c74d45f6b618f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b415373408087a029d23560e0f43c7c985158ce9f3818057d1c74d45f6b618f0", kill_on_drop: false }`
[INFO] [stdout] b415373408087a029d23560e0f43c7c985158ce9f3818057d1c74d45f6b618f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fa8249acdadd1776415bfa53f8ef3ca831801fd4213f3e6b320012aa8a4a56b
[INFO] running `Command { std: "docker" "start" "-a" "8fa8249acdadd1776415bfa53f8ef3ca831801fd4213f3e6b320012aa8a4a56b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc_tools v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::Close`
[INFO] [stdout]  --> src/dup.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::Close;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `c_void`, `pipe`, `read`
[INFO] [stdout]  --> src/popen.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 |     __errno_location, _exit, c_int, c_void, execl, fclose, fdopen, pipe, pipe2, read, socketpair,
[INFO] [stdout]   |                                     ^^^^^^                         ^^^^         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error::Error`, `null_mut`
[INFO] [stdout]  --> src/pty.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 3 |     ptr::{null, null_mut},
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `stdin`
[INFO] [stdout]  --> src/run.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{stdin, Read};
[INFO] [stdout]   |               ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]  --> src/run.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut buf = [0 as u8; 4096];
[INFO] [stdout]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/run.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut buf = [0 as u8; 4096];
[INFO] [stdout]   |         ----^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/popen.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn to_string(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `socket_pipe`
[INFO] [stdout]   --> src/popen.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn socket_pipe() -> Result<[[c_int; 2]; 2], PopenError> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]  --> src/run.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create`
[INFO] [stdout]   --> src/socket_pair.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn create(
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "8fa8249acdadd1776415bfa53f8ef3ca831801fd4213f3e6b320012aa8a4a56b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fa8249acdadd1776415bfa53f8ef3ca831801fd4213f3e6b320012aa8a4a56b", kill_on_drop: false }`
[INFO] [stdout] 8fa8249acdadd1776415bfa53f8ef3ca831801fd4213f3e6b320012aa8a4a56b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 752ffe076379ebae8ab65bbe46b951d86f7553eaaf3a304bceff446cddab2a47
[INFO] running `Command { std: "docker" "start" "-a" "752ffe076379ebae8ab65bbe46b951d86f7553eaaf3a304bceff446cddab2a47", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc_tools v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::Close`
[INFO] [stdout]  --> src/dup.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::Close;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `c_void`, `pipe`, `read`
[INFO] [stdout]  --> src/popen.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 |     __errno_location, _exit, c_int, c_void, execl, fclose, fdopen, pipe, pipe2, read, socketpair,
[INFO] [stdout]   |                                     ^^^^^^                         ^^^^         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error::Error`, `null_mut`
[INFO] [stdout]  --> src/pty.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 3 |     ptr::{null, null_mut},
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `stdin`
[INFO] [stdout]  --> src/run.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{stdin, Read};
[INFO] [stdout]   |               ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]  --> src/run.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut buf = [0 as u8; 4096];
[INFO] [stdout]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/run.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut buf = [0 as u8; 4096];
[INFO] [stdout]   |         ----^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/popen.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn to_string(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `socket_pipe`
[INFO] [stdout]   --> src/popen.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn socket_pipe() -> Result<[[c_int; 2]; 2], PopenError> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]  --> src/run.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create`
[INFO] [stdout]   --> src/socket_pair.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn create(
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Close`, `PipeSide`
[INFO] [stdout]   --> src/close.rs:53:17
[INFO] [stdout]    |
[INFO] [stdout] 53 |     use crate::{Close, Pipe, PipeSide};
[INFO] [stdout]    |                 ^^^^^        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::Close`
[INFO] [stdout]  --> src/dup.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::Close;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc::execl`
[INFO] [stdout]    --> src/pipe.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |     use libc::execl;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `c_void`, `pipe`, `read`
[INFO] [stdout]  --> src/popen.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 |     __errno_location, _exit, c_int, c_void, execl, fclose, fdopen, pipe, pipe2, read, socketpair,
[INFO] [stdout]   |                                     ^^^^^^                         ^^^^         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FILE`, `SOCK_CLOEXEC`, `__errno_location`, `fclose`, `perror`
[INFO] [stdout]    --> src/popen.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |         __errno_location, fclose, fgets, perror, socketpair, strlen, FILE, PF_UNIX, SOCK_CLOEXEC,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^  ^^^^^^         ^^^^^^                      ^^^^           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Wait`, `popen::popen`
[INFO] [stdout]    --> src/popen.rs:192:17
[INFO] [stdout]     |
[INFO] [stdout] 192 |     use crate::{popen::popen, Close, Popen, Wait};
[INFO] [stdout]     |                 ^^^^^^^^^^^^                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error::Error`, `null_mut`
[INFO] [stdout]  --> src/pty.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 3 |     ptr::{null, null_mut},
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `stdin`
[INFO] [stdout]  --> src/run.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{stdin, Read};
[INFO] [stdout]   |               ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `popen::Popen::arg`: do not use!
[INFO] [stdout]    --> src/popen.rs:223:16
[INFO] [stdout]     |
[INFO] [stdout] 223 |         Popen::arg("date").exec().unwrap();
[INFO] [stdout]     |                ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `popen::Popen::exec`: do not use!
[INFO] [stdout]    --> src/popen.rs:223:28
[INFO] [stdout]     |
[INFO] [stdout] 223 |         Popen::arg("date").exec().unwrap();
[INFO] [stdout]     |                            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `popen::Popen::arg`: do not use!
[INFO] [stdout]    --> src/popen.rs:238:32
[INFO] [stdout]     |
[INFO] [stdout] 238 |             let popen = Popen::arg("time").exec().unwrap();
[INFO] [stdout]     |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `popen::Popen::exec`: do not use!
[INFO] [stdout]    --> src/popen.rs:238:44
[INFO] [stdout]     |
[INFO] [stdout] 238 |             let popen = Popen::arg("time").exec().unwrap();
[INFO] [stdout]     |                                            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `popen::Popen::arg`: do not use!
[INFO] [stdout]    --> src/popen.rs:252:24
[INFO] [stdout]     |
[INFO] [stdout] 252 |         let o = Popen::arg(
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `popen::Popen::exec`: do not use!
[INFO] [stdout]    --> src/popen.rs:261:10
[INFO] [stdout]     |
[INFO] [stdout] 261 |         .exec()
[INFO] [stdout]     |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]    --> src/pipe.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let path = CString::new("/bin/sh")?;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sh`
[INFO] [stdout]    --> src/pipe.rs:143:13
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let sh = CString::new("sh")?;
[INFO] [stdout]     |             ^^ help: if this is intentional, prefix it with an underscore: `_sh`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exec`
[INFO] [stdout]    --> src/pipe.rs:144:13
[INFO] [stdout]     |
[INFO] [stdout] 144 |         let exec = CString::new("-c")?;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_exec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]    --> src/pipe.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |         let arg = CString::new("ls")?;
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]  --> src/run.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut buf = [0 as u8; 4096];
[INFO] [stdout]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/run.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut buf = [0 as u8; 4096];
[INFO] [stdout]   |         ----^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/popen.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn to_string(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `socket_pipe`
[INFO] [stdout]   --> src/popen.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn socket_pipe() -> Result<[[c_int; 2]; 2], PopenError> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]  --> src/run.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create`
[INFO] [stdout]   --> src/socket_pair.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn create(
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `Command { std: "docker" "inspect" "752ffe076379ebae8ab65bbe46b951d86f7553eaaf3a304bceff446cddab2a47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "752ffe076379ebae8ab65bbe46b951d86f7553eaaf3a304bceff446cddab2a47", kill_on_drop: false }`
[INFO] [stdout] 752ffe076379ebae8ab65bbe46b951d86f7553eaaf3a304bceff446cddab2a47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0b35590d50e5f616e351f5ad61cecc8e612d88008445e43eead3404d02d2929b
[INFO] running `Command { std: "docker" "start" "-a" "0b35590d50e5f616e351f5ad61cecc8e612d88008445e43eead3404d02d2929b", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `crate::Close`
[INFO] [stderr]  --> src/dup.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::Close;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `c_void`, `pipe`, `read`
[INFO] [stderr]  --> src/popen.rs:2:37
[INFO] [stderr]   |
[INFO] [stderr] 2 |     __errno_location, _exit, c_int, c_void, execl, fclose, fdopen, pipe, pipe2, read, socketpair,
[INFO] [stderr]   |                                     ^^^^^^                         ^^^^         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `error::Error`, `null_mut`
[INFO] [stderr]  --> src/pty.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     error::Error,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 3 |     ptr::{null, null_mut},
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read`, `stdin`
[INFO] [stderr]  --> src/run.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{stdin, Read};
[INFO] [stderr]   |               ^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]  --> src/run.rs:4:13
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut buf = [0 as u8; 4096];
[INFO] [stderr]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/run.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut buf = [0 as u8; 4096];
[INFO] [stderr]   |         ----^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_string`
[INFO] [stderr]   --> src/popen.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn to_string(&self) -> String {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `socket_pipe`
[INFO] [stderr]   --> src/popen.rs:79:4
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn socket_pipe() -> Result<[[c_int; 2]; 2], PopenError> {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/run.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn main() {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `create`
[INFO] [stderr]   --> src/socket_pair.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn create(
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Close`, `PipeSide`
[INFO] [stderr]   --> src/close.rs:53:17
[INFO] [stderr]    |
[INFO] [stderr] 53 |     use crate::{Close, Pipe, PipeSide};
[INFO] [stderr]    |                 ^^^^^        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::Close`
[INFO] [stderr]  --> src/dup.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::Close;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `libc::execl`
[INFO] [stderr]    --> src/pipe.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 |     use libc::execl;
[INFO] [stderr]     |         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `c_void`, `pipe`, `read`
[INFO] [stderr]  --> src/popen.rs:2:37
[INFO] [stderr]   |
[INFO] [stderr] 2 |     __errno_location, _exit, c_int, c_void, execl, fclose, fdopen, pipe, pipe2, read, socketpair,
[INFO] [stderr]   |                                     ^^^^^^                         ^^^^         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FILE`, `SOCK_CLOEXEC`, `__errno_location`, `fclose`, `perror`
[INFO] [stderr]    --> src/popen.rs:188:9
[INFO] [stderr]     |
[INFO] [stderr] 188 |         __errno_location, fclose, fgets, perror, socketpair, strlen, FILE, PF_UNIX, SOCK_CLOEXEC,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^  ^^^^^^         ^^^^^^                      ^^^^           ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Wait`, `popen::popen`
[INFO] [stderr]    --> src/popen.rs:192:17
[INFO] [stderr]     |
[INFO] [stderr] 192 |     use crate::{popen::popen, Close, Popen, Wait};
[INFO] [stderr]     |                 ^^^^^^^^^^^^                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `error::Error`, `null_mut`
[INFO] [stderr]  --> src/pty.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     error::Error,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 3 |     ptr::{null, null_mut},
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read`, `stdin`
[INFO] [stderr]  --> src/run.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{stdin, Read};
[INFO] [stderr]   |               ^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `popen::Popen::arg`: do not use!
[INFO] [stderr]    --> src/popen.rs:223:16
[INFO] [stderr]     |
[INFO] [stderr] 223 |         Popen::arg("date").exec().unwrap();
[INFO] [stderr]     |                ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `popen::Popen::exec`: do not use!
[INFO] [stderr]    --> src/popen.rs:223:28
[INFO] [stderr]     |
[INFO] [stderr] 223 |         Popen::arg("date").exec().unwrap();
[INFO] [stderr]     |                            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `popen::Popen::arg`: do not use!
[INFO] [stderr]    --> src/popen.rs:238:32
[INFO] [stderr]     |
[INFO] [stderr] 238 |             let popen = Popen::arg("time").exec().unwrap();
[INFO] [stderr]     |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `popen::Popen::exec`: do not use!
[INFO] [stderr]    --> src/popen.rs:238:44
[INFO] [stderr]     |
[INFO] [stderr] 238 |             let popen = Popen::arg("time").exec().unwrap();
[INFO] [stderr]     |                                            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `popen::Popen::arg`: do not use!
[INFO] [stderr]    --> src/popen.rs:252:24
[INFO] [stderr]     |
[INFO] [stderr] 252 |         let o = Popen::arg(
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `popen::Popen::exec`: do not use!
[INFO] [stderr]    --> src/popen.rs:261:10
[INFO] [stderr]     |
[INFO] [stderr] 261 |         .exec()
[INFO] [stderr]     |          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]    --> src/pipe.rs:142:13
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let path = CString::new("/bin/sh")?;
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sh`
[INFO] [stderr]    --> src/pipe.rs:143:13
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let sh = CString::new("sh")?;
[INFO] [stderr]     |             ^^ help: if this is intentional, prefix it with an underscore: `_sh`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exec`
[INFO] [stderr]    --> src/pipe.rs:144:13
[INFO] [stderr]     |
[INFO] [stderr] 144 |         let exec = CString::new("-c")?;
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_exec`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arg`
[INFO] [stderr]    --> src/pipe.rs:145:13
[INFO] [stderr]     |
[INFO] [stderr] 145 |         let arg = CString::new("ls")?;
[INFO] [stderr]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]  --> src/run.rs:4:13
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut buf = [0 as u8; 4096];
[INFO] [stderr]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/run.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let mut buf = [0 as u8; 4096];
[INFO] [stderr]   |         ----^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_string`
[INFO] [stderr]   --> src/popen.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn to_string(&self) -> String {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `socket_pipe`
[INFO] [stderr]   --> src/popen.rs:79:4
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn socket_pipe() -> Result<[[c_int; 2]; 2], PopenError> {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/run.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn main() {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `create`
[INFO] [stderr]   --> src/socket_pair.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn create(
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 24 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/libc_tools-f7f666e18b97743d)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test fork::fork::fork_box ... ok
[INFO] [stdout] test close::close::test_close_pipe ... ok
[INFO] [stdout] test pipe::pipe::test_create_pipe_macro ... ok
[INFO] [stdout] test pipe::pipe::test_execl ... ok
[INFO] [stdout] test pty::pty::test_pty ... ignored
[INFO] [stdout] test popen::popen::test_out_err ... ok
[INFO] [stdout] test popen::popen::socketpair_redirect ... ok
[INFO] [stdout] test popen::popen::test_libc_popen ... ok
[INFO] [stdout] test popen::popen::tty_shell ... ok
[INFO] [stdout] test popen::popen::test_write_out ... ok
[INFO] [stdout] test popen::popen::test_popen_date ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests libc_tools
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0b35590d50e5f616e351f5ad61cecc8e612d88008445e43eead3404d02d2929b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b35590d50e5f616e351f5ad61cecc8e612d88008445e43eead3404d02d2929b", kill_on_drop: false }`
[INFO] [stdout] 0b35590d50e5f616e351f5ad61cecc8e612d88008445e43eead3404d02d2929b
