[INFO] cloning repository https://github.com/acm-uic/SIG-Systems-Rust-Shell
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/acm-uic/SIG-Systems-Rust-Shell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Facm-uic%2FSIG-Systems-Rust-Shell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Facm-uic%2FSIG-Systems-Rust-Shell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2da2531ef7b551989d1eea37a8a88346d92d9b00
[INFO] checking acm-uic/SIG-Systems-Rust-Shell against try#54bb9bb1bbe87f59b5a2e9afea4c8cedcf5e0b47 for pr-153041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Facm-uic%2FSIG-Systems-Rust-Shell" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/acm-uic/SIG-Systems-Rust-Shell
[INFO] finished tweaking git repo https://github.com/acm-uic/SIG-Systems-Rust-Shell
[INFO] tweaked toml for git repo https://github.com/acm-uic/SIG-Systems-Rust-Shell written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/acm-uic/SIG-Systems-Rust-Shell on toolchain 54bb9bb1bbe87f59b5a2e9afea4c8cedcf5e0b47
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54bb9bb1bbe87f59b5a2e9afea4c8cedcf5e0b47" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/acm-uic/SIG-Systems-Rust-Shell 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" "+54bb9bb1bbe87f59b5a2e9afea4c8cedcf5e0b47" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54bb9bb1bbe87f59b5a2e9afea4c8cedcf5e0b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5edea347a3d0e2d996f2770b0adfa206ecc73051b5771bedebf1ce4d9cf68021
[INFO] running `Command { std: "docker" "start" "-a" "5edea347a3d0e2d996f2770b0adfa206ecc73051b5771bedebf1ce4d9cf68021", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5edea347a3d0e2d996f2770b0adfa206ecc73051b5771bedebf1ce4d9cf68021", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5edea347a3d0e2d996f2770b0adfa206ecc73051b5771bedebf1ce4d9cf68021", kill_on_drop: false }`
[INFO] [stdout] 5edea347a3d0e2d996f2770b0adfa206ecc73051b5771bedebf1ce4d9cf68021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54bb9bb1bbe87f59b5a2e9afea4c8cedcf5e0b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15281db448efaa14d1af1353e548838b72811352be615e40604c6fd8b83ddb72
[INFO] running `Command { std: "docker" "start" "-a" "15281db448efaa14d1af1353e548838b72811352be615e40604c6fd8b83ddb72", kill_on_drop: false }`
[INFO] [stderr]     Checking sig-systems-shell v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `WaitReturn`
[INFO] [stdout]  --> src/main.rs:5:51
[INFO] [stdout]   |
[INFO] [stdout] 5 | use safe_wrappers::{fork, exec, wait, ForkReturn, WaitReturn, pipe, close, dup2};
[INFO] [stdout]   |                                                   ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsRawFd`
[INFO] [stdout]   --> src/main.rs:11:39
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::{io::{self, Write}, os::fd::{AsRawFd, RawFd}};
[INFO] [stdout]    |                                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `WaitReturn`
[INFO] [stdout]  --> src/main.rs:5:51
[INFO] [stdout]   |
[INFO] [stdout] 5 | use safe_wrappers::{fork, exec, wait, ForkReturn, WaitReturn, pipe, close, dup2};
[INFO] [stdout]   |                                                   ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsRawFd`
[INFO] [stdout]   --> src/main.rs:11:39
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::{io::{self, Write}, os::fd::{AsRawFd, RawFd}};
[INFO] [stdout]    |                                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnmatchedDelimiterError` is never constructed
[INFO] [stdout]  --> src/lexer.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct UnmatchedDelimiterError;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NonRedirTypeToken` is never constructed
[INFO] [stdout]   --> src/parser.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub struct NonRedirTypeToken {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_redir_type` is never used
[INFO] [stdout]    --> src/parser.rs:207:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | impl<I: Iterator<Item = Result<Token, ParseError>>> Parser<I> {
[INFO] [stdout]     | ------------------------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 207 |     fn parse_redir_type(&mut self) -> RedirType {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/safe_wrappers.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Parent(pid_t),
[INFO] [stdout]   |     ------ ^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 9 -     Parent(pid_t),
[INFO] [stdout] 9 +     Parent(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `pid` and `status` are never read
[INFO] [stdout]   --> src/safe_wrappers.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub(crate) struct WaitReturn {
[INFO] [stdout]    |                   ---------- fields in this struct
[INFO] [stdout] 51 |     pid: pid_t,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 52 |     status: WaitStatus,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/safe_wrappers.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     Exited(i32),
[INFO] [stdout]    |     ------ ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 56 -     Exited(i32),
[INFO] [stdout] 56 +     Exited(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/safe_wrappers.rs:57:16
[INFO] [stdout]    |
[INFO] [stdout] 57 |     TermSignal(i32),
[INFO] [stdout]    |     ---------- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 57 -     TermSignal(i32),
[INFO] [stdout] 57 +     TermSignal(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/safe_wrappers.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |     Stopped(i32),
[INFO] [stdout]    |     ------- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 58 -     Stopped(i32),
[INFO] [stdout] 58 +     Stopped(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnmatchedDelimiterError` is never constructed
[INFO] [stdout]  --> src/lexer.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct UnmatchedDelimiterError;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NonRedirTypeToken` is never constructed
[INFO] [stdout]   --> src/parser.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub struct NonRedirTypeToken {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_redir_type` is never used
[INFO] [stdout]    --> src/parser.rs:207:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | impl<I: Iterator<Item = Result<Token, ParseError>>> Parser<I> {
[INFO] [stdout]     | ------------------------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 207 |     fn parse_redir_type(&mut self) -> RedirType {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/safe_wrappers.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Parent(pid_t),
[INFO] [stdout]   |     ------ ^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 9 -     Parent(pid_t),
[INFO] [stdout] 9 +     Parent(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `pid` and `status` are never read
[INFO] [stdout]   --> src/safe_wrappers.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub(crate) struct WaitReturn {
[INFO] [stdout]    |                   ---------- fields in this struct
[INFO] [stdout] 51 |     pid: pid_t,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 52 |     status: WaitStatus,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/safe_wrappers.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     Exited(i32),
[INFO] [stdout]    |     ------ ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 56 -     Exited(i32),
[INFO] [stdout] 56 +     Exited(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/safe_wrappers.rs:57:16
[INFO] [stdout]    |
[INFO] [stdout] 57 |     TermSignal(i32),
[INFO] [stdout]    |     ---------- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 57 -     TermSignal(i32),
[INFO] [stdout] 57 +     TermSignal(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/safe_wrappers.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |     Stopped(i32),
[INFO] [stdout]    |     ------- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 58 -     Stopped(i32),
[INFO] [stdout] 58 +     Stopped(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "15281db448efaa14d1af1353e548838b72811352be615e40604c6fd8b83ddb72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15281db448efaa14d1af1353e548838b72811352be615e40604c6fd8b83ddb72", kill_on_drop: false }`
[INFO] [stdout] 15281db448efaa14d1af1353e548838b72811352be615e40604c6fd8b83ddb72
