[INFO] cloning repository https://github.com/pol905/os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pol905/os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpol905%2Fos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpol905%2Fos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fbfe6439d430ef7f9de2d3956e58b063ff2f0f7a
[INFO] checking pol905/os against try#5de9e0e6cf775e94e0de2003f35e183f3f77bfe8 for pr-143808
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpol905%2Fos" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pol905/os
[INFO] finished tweaking git repo https://github.com/pol905/os
[INFO] tweaked toml for git repo https://github.com/pol905/os written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pol905/os on toolchain 5de9e0e6cf775e94e0de2003f35e183f3f77bfe8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pol905/os 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" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86b91f59862bef614949bfaa00e2d40ca0aa1ee17d28d9a5a0f9361225bab45b
[INFO] running `Command { std: "docker" "start" "-a" "86b91f59862bef614949bfaa00e2d40ca0aa1ee17d28d9a5a0f9361225bab45b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86b91f59862bef614949bfaa00e2d40ca0aa1ee17d28d9a5a0f9361225bab45b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86b91f59862bef614949bfaa00e2d40ca0aa1ee17d28d9a5a0f9361225bab45b", kill_on_drop: false }`
[INFO] [stdout] 86b91f59862bef614949bfaa00e2d40ca0aa1ee17d28d9a5a0f9361225bab45b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+5de9e0e6cf775e94e0de2003f35e183f3f77bfe8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97f4ea202bbdd6772442649c44ddc24449a19753d256cf6c94faa76cfe1bf096
[INFO] running `Command { std: "docker" "start" "-a" "97f4ea202bbdd6772442649c44ddc24449a19753d256cf6c94faa76cfe1bf096", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]     Checking fork v0.1.0 (/opt/rustwide/workdir/fork)
[INFO] [stderr]     Checking fork_files v0.1.0 (/opt/rustwide/workdir/fork_files)
[INFO] [stderr]     Checking exec v0.1.0 (/opt/rustwide/workdir/exec)
[INFO] [stderr]     Checking output_redirection v0.1.0 (/opt/rustwide/workdir/output_redirection)
[INFO] [stderr]     Checking pipe v0.1.0 (/opt/rustwide/workdir/pipe)
[INFO] [stdout] warning: unused import: `libc::sleep`
[INFO] [stdout]  --> fork_files/src/main.rs:3:58
[INFO] [stdout]   |
[INFO] [stdout] 3 | use nix::{sys::wait::waitpid,unistd::{fork, ForkResult}, libc::sleep};
[INFO] [stdout]   |                                                          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc::sleep`
[INFO] [stdout]  --> exec/src/main.rs:5:58
[INFO] [stdout]   |
[INFO] [stdout] 5 | use nix::{sys::wait::waitpid,unistd::{self, ForkResult}, libc::sleep};
[INFO] [stdout]   |                                                          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc::sleep`
[INFO] [stdout]  --> exec/src/main.rs:5:58
[INFO] [stdout]   |
[INFO] [stdout] 5 | use nix::{sys::wait::waitpid,unistd::{self, ForkResult}, libc::sleep};
[INFO] [stdout]   |                                                          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc::sleep`
[INFO] [stdout]  --> fork_files/src/main.rs:3:58
[INFO] [stdout]   |
[INFO] [stdout] 3 | use nix::{sys::wait::waitpid,unistd::{fork, ForkResult}, libc::sleep};
[INFO] [stdout]   |                                                          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc::sleep`
[INFO] [stdout]  --> fork/src/main.rs:3:58
[INFO] [stdout]   |
[INFO] [stdout] 3 | use nix::{sys::wait::waitpid,unistd::{fork, ForkResult}, libc::sleep};
[INFO] [stdout]   |                                                          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc::sleep`
[INFO] [stdout]  --> fork/src/main.rs:3:58
[INFO] [stdout]   |
[INFO] [stdout] 3 | use nix::{sys::wait::waitpid,unistd::{fork, ForkResult}, libc::sleep};
[INFO] [stdout]   |                                                          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sleep`
[INFO] [stdout]  --> output_redirection/src/main.rs:6:70
[INFO] [stdout]   |
[INFO] [stdout] 6 | use nix::{sys::wait::waitpid,unistd::{self,ForkResult}, libc::{self, sleep, STDOUT_FILENO}};
[INFO] [stdout]   |                                                                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sleep`
[INFO] [stdout]  --> output_redirection/src/main.rs:6:70
[INFO] [stdout]   |
[INFO] [stdout] 6 | use nix::{sys::wait::waitpid,unistd::{self,ForkResult}, libc::{self, sleep, STDOUT_FILENO}};
[INFO] [stdout]   |                                                                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.69s
[INFO] running `Command { std: "docker" "inspect" "97f4ea202bbdd6772442649c44ddc24449a19753d256cf6c94faa76cfe1bf096", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97f4ea202bbdd6772442649c44ddc24449a19753d256cf6c94faa76cfe1bf096", kill_on_drop: false }`
[INFO] [stdout] 97f4ea202bbdd6772442649c44ddc24449a19753d256cf6c94faa76cfe1bf096