[INFO] cloning repository https://github.com/SnO2WMaN/my-first-rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SnO2WMaN/my-first-rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSnO2WMaN%2Fmy-first-rust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSnO2WMaN%2Fmy-first-rust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f1100d7feed3f8e1a9b2ffe1480bc12dd8ff19c3
[INFO] checking SnO2WMaN/my-first-rust-practice/f1100d7feed3f8e1a9b2ffe1480bc12dd8ff19c3 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSnO2WMaN%2Fmy-first-rust-practice" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SnO2WMaN/my-first-rust-practice on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SnO2WMaN/my-first-rust-practice
[INFO] finished tweaking git repo https://github.com/SnO2WMaN/my-first-rust-practice
[INFO] tweaked toml for git repo https://github.com/SnO2WMaN/my-first-rust-practice written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/SnO2WMaN/my-first-rust-practice 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce20cee49d3cbdc6d35f45c9d248a5dc6b2d98d58ec706e9abefd029902e5a08
[INFO] running `Command { std: "docker" "start" "-a" "ce20cee49d3cbdc6d35f45c9d248a5dc6b2d98d58ec706e9abefd029902e5a08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce20cee49d3cbdc6d35f45c9d248a5dc6b2d98d58ec706e9abefd029902e5a08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce20cee49d3cbdc6d35f45c9d248a5dc6b2d98d58ec706e9abefd029902e5a08", kill_on_drop: false }`
[INFO] [stdout] ce20cee49d3cbdc6d35f45c9d248a5dc6b2d98d58ec706e9abefd029902e5a08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f329321f5fdff3b1ab38a77c45f020309dd43baa2c883020af2f60aed9690cc
[INFO] running `Command { std: "docker" "start" "-a" "9f329321f5fdff3b1ab38a77c45f020309dd43baa2c883020af2f60aed9690cc", 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]     Checking regex v0.1.0 (/opt/rustwide/workdir/regex)
[INFO] [stdout] warning: unused imports: `Display`, `mem::take`, and `self`
[INFO] [stdout]  --> regex/src/engine/parser.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fmt::{self, Display},
[INFO] [stdout]   |           ^^^^  ^^^^^^^
[INFO] [stdout] 4 |     mem::take,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Display`, `mem::take`, and `self`
[INFO] [stdout]  --> regex/src/engine/parser.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fmt::{self, Display},
[INFO] [stdout]   |           ^^^^  ^^^^^^^
[INFO] [stdout] 4 |     mem::take,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `ParseError` doesn't implement `std::fmt::Display`
[INFO] [stdout]   --> regex/src/engine/parser.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Error for ParseError {}
[INFO] [stdout]    |                ^^^^^^^^^^ `ParseError` cannot be formatted with the default formatter
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::fmt::Display` is not implemented for `ParseError`
[INFO] [stdout]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stdout] note: required by a bound in `std::error::Error`
[INFO] [stdout]   --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/error.rs:29:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `ParseError` doesn't implement `std::fmt::Display`
[INFO] [stdout]   --> regex/src/engine/parser.rs:26:16
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Error for ParseError {}
[INFO] [stdout]    |                ^^^^^^^^^^ `ParseError` cannot be formatted with the default formatter
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::fmt::Display` is not implemented for `ParseError`
[INFO] [stdout]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stdout] note: required by a bound in `std::error::Error`
[INFO] [stdout]   --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/error.rs:29:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex` (bin "regex" test) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex` (bin "regex") due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "9f329321f5fdff3b1ab38a77c45f020309dd43baa2c883020af2f60aed9690cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f329321f5fdff3b1ab38a77c45f020309dd43baa2c883020af2f60aed9690cc", kill_on_drop: false }`
[INFO] [stdout] 9f329321f5fdff3b1ab38a77c45f020309dd43baa2c883020af2f60aed9690cc