[INFO] fetching crate nixpkgs-fmt 1.2.0...
[INFO] checking nixpkgs-fmt-1.2.0 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate nixpkgs-fmt 1.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate nixpkgs-fmt 1.2.0 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 crates.io crate nixpkgs-fmt 1.2.0
[INFO] finished tweaking crates.io crate nixpkgs-fmt 1.2.0
[INFO] tweaked toml for crates.io crate nixpkgs-fmt 1.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate nixpkgs-fmt 1.2.0 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b810a1a5b3fc61ae26393d585a9656726959355a30ae13c1b9b09e8f5108d420
[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" "b810a1a5b3fc61ae26393d585a9656726959355a30ae13c1b9b09e8f5108d420", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b810a1a5b3fc61ae26393d585a9656726959355a30ae13c1b9b09e8f5108d420", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b810a1a5b3fc61ae26393d585a9656726959355a30ae13c1b9b09e8f5108d420", kill_on_drop: false }`
[INFO] [stdout] b810a1a5b3fc61ae26393d585a9656726959355a30ae13c1b9b09e8f5108d420
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7412894a5981333dcbb986b821ea5ab3d7dad7b6ceef00b84d6fb2d2e77bb1b6
[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" "7412894a5981333dcbb986b821ea5ab3d7dad7b6ceef00b84d6fb2d2e77bb1b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking countme v2.0.4
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking smol_str v0.1.17
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking unindent v0.1.5
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking cbitset v0.2.0
[INFO] [stderr]     Checking regex v1.3.5
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking text-size v1.1.0
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking ignore v0.4.13
[INFO] [stderr]     Checking rowan v0.12.6
[INFO] [stderr]     Checking rnix v0.9.0
[INFO] [stderr]     Checking nixpkgs-fmt v1.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/rules.rs:813:29
[INFO] [stdout]     |
[INFO] [stdout] 813 |         .map_err(|e| panic!(e))
[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] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 813 |         .map_err(|e| panic!("{}", e))
[INFO] [stdout]     |                             ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 813 |         .map_err(|e| std::panic::panic_any(e))
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.52s
[INFO] running `Command { std: "docker" "inspect" "7412894a5981333dcbb986b821ea5ab3d7dad7b6ceef00b84d6fb2d2e77bb1b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7412894a5981333dcbb986b821ea5ab3d7dad7b6ceef00b84d6fb2d2e77bb1b6", kill_on_drop: false }`
[INFO] [stdout] 7412894a5981333dcbb986b821ea5ab3d7dad7b6ceef00b84d6fb2d2e77bb1b6