[INFO] cloning repository https://github.com/mookid/diffr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mookid/diffr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmookid%2Fdiffr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmookid%2Fdiffr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 05b6299f66f1df817ca853d97b8a13179eff33bc
[INFO] checking mookid/diffr against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmookid%2Fdiffr" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mookid/diffr on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mookid/diffr
[INFO] finished tweaking git repo https://github.com/mookid/diffr
[INFO] tweaked toml for git repo https://github.com/mookid/diffr written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/mookid/diffr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 383558f36bc86d3fa48f62783dc01607df77ccfdf6e42ca78109b66287e300d3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "383558f36bc86d3fa48f62783dc01607df77ccfdf6e42ca78109b66287e300d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "383558f36bc86d3fa48f62783dc01607df77ccfdf6e42ca78109b66287e300d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "383558f36bc86d3fa48f62783dc01607df77ccfdf6e42ca78109b66287e300d3", kill_on_drop: false }`
[INFO] [stdout] 383558f36bc86d3fa48f62783dc01607df77ccfdf6e42ca78109b66287e300d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62d19576766f36c8e48a56e592613fc4fcac8f3340d7c49452e0df7621c6e41a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "62d19576766f36c8e48a56e592613fc4fcac8f3340d7c49452e0df7621c6e41a", kill_on_drop: false }`
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking diffr v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/tests_cli.rs:91:6
[INFO] [stdout]    |
[INFO] [stdout] 91 |     };
[INFO] [stdout]    |      ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/tests_cli.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 | /                 format!(
[INFO] [stdout] 26 | |                     "{}: expected empty, got\n\n{}",
[INFO] [stdout] 27 | |                     quote_or_empty(prefix),
[INFO] [stdout] 28 | |                     quote_or_empty(actual)
[INFO] [stdout] 29 | |                 )
[INFO] [stdout]    | |_________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 
[INFO] [stdout] 26 |                     "{}: expected empty, got\n\n{}",
[INFO] [stdout] 27 |                     quote_or_empty(prefix),
[INFO] [stdout] 28 |                     quote_or_empty(actual)
[INFO] [stdout] 29 |                 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/tests_cli.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 | /                 format!(
[INFO] [stdout] 34 | |                     "{}: expected at least\n\n{}\n\ngot\n\n{}",
[INFO] [stdout] 35 | |                     prefix,
[INFO] [stdout] 36 | |                     quote_or_empty(exp),
[INFO] [stdout] 37 | |                     quote_or_empty(actual)
[INFO] [stdout] 38 | |                 )
[INFO] [stdout]    | |_________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 
[INFO] [stdout] 34 |                     "{}: expected at least\n\n{}\n\ngot\n\n{}",
[INFO] [stdout] 35 |                     prefix,
[INFO] [stdout] 36 |                     quote_or_empty(exp),
[INFO] [stdout] 37 |                     quote_or_empty(actual)
[INFO] [stdout] 38 |                 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/tests_cli.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 | /                 format!(
[INFO] [stdout] 43 | |                     "{}: expected\n\n{}\n\ngot\n\n{}",
[INFO] [stdout] 44 | |                     prefix,
[INFO] [stdout] 45 | |                     quote_or_empty(exp),
[INFO] [stdout] 46 | |                     quote_or_empty(actual)
[INFO] [stdout] 47 | |                 )
[INFO] [stdout]    | |_________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 
[INFO] [stdout] 43 |                     "{}: expected\n\n{}\n\ngot\n\n{}",
[INFO] [stdout] 44 |                     prefix,
[INFO] [stdout] 45 |                     quote_or_empty(exp),
[INFO] [stdout] 46 |                     quote_or_empty(actual)
[INFO] [stdout] 47 |                 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/tests_cli.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 | /         format!(
[INFO] [stdout] 95 | |             "unexpected status: expected {} got {}",
[INFO] [stdout] 96 | |             string_of_status(descr.is_success),
[INFO] [stdout] 97 | |             string_of_status(output.status.success()),
[INFO] [stdout] 98 | |         )
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 94 |         
[INFO] [stdout] 95 |             "unexpected status: expected {} got {}",
[INFO] [stdout] 96 |             string_of_status(descr.is_success),
[INFO] [stdout] 97 |             string_of_status(output.status.success()),
[INFO] [stdout] 98 |         
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "62d19576766f36c8e48a56e592613fc4fcac8f3340d7c49452e0df7621c6e41a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62d19576766f36c8e48a56e592613fc4fcac8f3340d7c49452e0df7621c6e41a", kill_on_drop: false }`
[INFO] [stdout] 62d19576766f36c8e48a56e592613fc4fcac8f3340d7c49452e0df7621c6e41a