[INFO] updating cached repository https://github.com/aisrael/queue
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8309e0c328333877dfd2492b5a0470f542dd568d
[INFO] checking aisrael/queue against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faisrael%2Fqueue" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aisrael/queue on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/aisrael/queue
[INFO] finished tweaking git repo https://github.com/aisrael/queue
[INFO] tweaked toml for git repo https://github.com/aisrael/queue written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/aisrael/queue already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b2b7bd575aafe99fada68ffa27d6214bfab50dd0729169cd66129cbe06942b84
[INFO] running `"docker" "start" "-a" "b2b7bd575aafe99fada68ffa27d6214bfab50dd0729169cd66129cbe06942b84"`
[INFO] [stderr]     Checking unix_socket v0.3.2
[INFO] [stderr]     Checking queue v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: could not find `consts` in `libc`
[INFO] [stderr]   --> src/main.rs:17:11
[INFO] [stderr]    |
[INFO] [stderr] 17 | use libc::consts::os::posix88::SIGINT;
[INFO] [stderr]    |           ^^^^^^ could not find `consts` in `libc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `funcs` in `libc`
[INFO] [stderr]   --> src/main.rs:18:11
[INFO] [stderr]    |
[INFO] [stderr] 18 | use libc::funcs::posix01::signal::signal;
[INFO] [stderr]    |           ^^^^^ could not find `funcs` in `libc`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::fs::PathExt`
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use std::fs::PathExt;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^ no `PathExt` in `fs`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `signal` in this scope
[INFO] [stderr]   --> src/main.rs:95:18
[INFO] [stderr]    |
[INFO] [stderr] 95 |         unsafe { signal(SIGINT, goodbye as u64); }
[INFO] [stderr]    |                  ^^^^^^ not found in this scope
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 9  | use libc::signal;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `SIGINT` in this scope
[INFO] [stderr]   --> src/main.rs:95:25
[INFO] [stderr]    |
[INFO] [stderr] 95 |         unsafe { signal(SIGINT, goodbye as u64); }
[INFO] [stderr]    |                         ^^^^^^ not found in this scope
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 9  | use libc::SIGINT;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `stdout`
[INFO] [stderr]   --> src/main.rs:12:47
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::{BufRead, BufReader, LineWriter, stdout, Write};
[INFO] [stderr]    |                                               ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | extern crate libc;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use libc::exit;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]    --> src/main.rs:103:14
[INFO] [stderr]     |
[INFO] [stderr] 103 |     unsafe { exit(1); }
[INFO] [stderr]     |              ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]     = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/sys.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate libc;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/sys.rs:7:6
[INFO] [stderr]   |
[INFO] [stderr] 7 |     use libc::c_char;
[INFO] [stderr]   |         ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/sys.rs:8:6
[INFO] [stderr]   |
[INFO] [stderr] 8 |     use libc::c_int;
[INFO] [stderr]   |         ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/sys.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 |     use libc::mode_t;
[INFO] [stderr]   |         ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/sys.rs:12:33
[INFO] [stderr]    |
[INFO] [stderr] 12 |         pub fn mkfifo(path: *const c_char, mode: mode_t) -> c_int;
[INFO] [stderr]    |                                    ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/sys.rs:12:47
[INFO] [stderr]    |
[INFO] [stderr] 12 |         pub fn mkfifo(path: *const c_char, mode: mode_t) -> c_int;
[INFO] [stderr]    |                                                  ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/sys.rs:12:58
[INFO] [stderr]    |
[INFO] [stderr] 12 |         pub fn mkfifo(path: *const c_char, mode: mode_t) -> c_int;
[INFO] [stderr]    |                                                             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/sys.rs:13:33
[INFO] [stderr]    |
[INFO] [stderr] 13 |         pub fn unlink(path: *const c_char) -> c_int;
[INFO] [stderr]    |                                    ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/sys.rs:13:44
[INFO] [stderr]    |
[INFO] [stderr] 13 |         pub fn unlink(path: *const c_char) -> c_int;
[INFO] [stderr]    |                                               ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `consts` in `libc`
[INFO] [stderr]   --> src/main.rs:17:11
[INFO] [stderr]    |
[INFO] [stderr] 17 | use libc::consts::os::posix88::SIGINT;
[INFO] [stderr]    |           ^^^^^^ could not find `consts` in `libc`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `funcs` in `libc`
[INFO] [stderr]   --> src/main.rs:18:11
[INFO] [stderr]    |
[INFO] [stderr] 18 | use libc::funcs::posix01::signal::signal;
[INFO] [stderr]    |           ^^^^^ could not find `funcs` in `libc`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::fs::PathExt`
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use std::fs::PathExt;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^ no `PathExt` in `fs`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `signal` in this scope
[INFO] [stderr]   --> src/main.rs:95:18
[INFO] [stderr]    |
[INFO] [stderr] 95 |         unsafe { signal(SIGINT, goodbye as u64); }
[INFO] [stderr]    |                  ^^^^^^ not found in this scope
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 9  | use libc::signal;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `SIGINT` in this scope
[INFO] [stderr]   --> src/main.rs:95:25
[INFO] [stderr]    |
[INFO] [stderr] 95 |         unsafe { signal(SIGINT, goodbye as u64); }
[INFO] [stderr]    |                         ^^^^^^ not found in this scope
[INFO] [stderr]    |
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 9  | use libc::SIGINT;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `stdout`
[INFO] [stderr]   --> src/main.rs:12:47
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::{BufRead, BufReader, LineWriter, stdout, Write};
[INFO] [stderr]    |                                               ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | extern crate libc;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use libc::exit;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]    --> src/main.rs:103:14
[INFO] [stderr]     |
[INFO] [stderr] 103 |     unsafe { exit(1); }
[INFO] [stderr]     |              ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]     = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/sys.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | extern crate libc;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/sys.rs:7:6
[INFO] [stderr]   |
[INFO] [stderr] 7 |     use libc::c_char;
[INFO] [stderr]   |         ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/sys.rs:8:6
[INFO] [stderr]   |
[INFO] [stderr] 8 |     use libc::c_int;
[INFO] [stderr]   |         ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]  --> src/sys.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 |     use libc::mode_t;
[INFO] [stderr]   |         ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/sys.rs:12:33
[INFO] [stderr]    |
[INFO] [stderr] 12 |         pub fn mkfifo(path: *const c_char, mode: mode_t) -> c_int;
[INFO] [stderr]    |                                    ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/sys.rs:12:47
[INFO] [stderr]    |
[INFO] [stderr] 12 |         pub fn mkfifo(path: *const c_char, mode: mode_t) -> c_int;
[INFO] [stderr]    |                                                  ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/sys.rs:12:58
[INFO] [stderr]    |
[INFO] [stderr] 12 |         pub fn mkfifo(path: *const c_char, mode: mode_t) -> c_int;
[INFO] [stderr]    |                                                             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/sys.rs:13:33
[INFO] [stderr]    |
[INFO] [stderr] 13 |         pub fn unlink(path: *const c_char) -> c_int;
[INFO] [stderr]    |                                    ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/sys.rs:13:44
[INFO] [stderr]    |
[INFO] [stderr] 13 |         pub fn unlink(path: *const c_char) -> c_int;
[INFO] [stderr]    |                                               ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stderr]    = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::slice::<impl [T]>::connect': renamed to join
[INFO] [stderr]   --> src/main.rs:89:33
[INFO] [stderr]    |
[INFO] [stderr] 89 |             queue(&matches.free.connect(" "));
[INFO] [stderr]    |                                 ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/sys.rs:21:36
[INFO] [stderr]    |
[INFO] [stderr] 21 |         return raw::mkfifo(p_path, mode);
[INFO] [stderr]    |                                    ^^^^
[INFO] [stderr]    |                                    |
[INFO] [stderr]    |                                    expected `u32`, found `u16`
[INFO] [stderr]    |                                    help: you can convert an `u16` to `u32`: `mode.into()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 18 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0425, E0432, E0433, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `queue`.
[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] [stderr] warning: use of deprecated item 'std::slice::<impl [T]>::connect': renamed to join
[INFO] [stderr]   --> src/main.rs:89:33
[INFO] [stderr]    |
[INFO] [stderr] 89 |             queue(&matches.free.connect(" "));
[INFO] [stderr]    |                                 ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/sys.rs:21:36
[INFO] [stderr]    |
[INFO] [stderr] 21 |         return raw::mkfifo(p_path, mode);
[INFO] [stderr]    |                                    ^^^^
[INFO] [stderr]    |                                    |
[INFO] [stderr]    |                                    expected `u32`, found `u16`
[INFO] [stderr]    |                                    help: you can convert an `u16` to `u32`: `mode.into()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 18 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0425, E0432, E0433, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `queue`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b2b7bd575aafe99fada68ffa27d6214bfab50dd0729169cd66129cbe06942b84"`
[INFO] running `"docker" "rm" "-f" "b2b7bd575aafe99fada68ffa27d6214bfab50dd0729169cd66129cbe06942b84"`
[INFO] [stdout] b2b7bd575aafe99fada68ffa27d6214bfab50dd0729169cd66129cbe06942b84
