[INFO] fetching crate provider 0.25.0...
[INFO] checking provider-0.25.0 against master#9503ea19edbf01b9435e80e17d60ce1b88390116 for pr-81782
[INFO] extracting crate provider 0.25.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate provider 0.25.0 on toolchain 9503ea19edbf01b9435e80e17d60ce1b88390116
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate provider 0.25.0
[INFO] finished tweaking crates.io crate provider 0.25.0
[INFO] tweaked toml for crates.io crate provider 0.25.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 267bb3ff659f3da584e585bb4ceda08a94f88da60058ab25a8ff66ec1473a836
[INFO] running `Command { std: "docker" "start" "-a" "267bb3ff659f3da584e585bb4ceda08a94f88da60058ab25a8ff66ec1473a836", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "267bb3ff659f3da584e585bb4ceda08a94f88da60058ab25a8ff66ec1473a836", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "267bb3ff659f3da584e585bb4ceda08a94f88da60058ab25a8ff66ec1473a836", kill_on_drop: false }`
[INFO] [stdout] 267bb3ff659f3da584e585bb4ceda08a94f88da60058ab25a8ff66ec1473a836
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 04e5cc838aef5401544ccb72cb3d4e034278fd01d733f602f845b28d885e9dda
[INFO] running `Command { std: "docker" "start" "-a" "04e5cc838aef5401544ccb72cb3d4e034278fd01d733f602f845b28d885e9dda", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling curl v0.4.34
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking simpath v1.4.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]     Checking tinyvec v1.1.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling curl-sys v0.4.40+curl-7.75.0
[INFO] [stderr]     Checking idna v0.2.2
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking provider v0.25.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/content/lib_provider.rs:148:30
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Err(e) => panic!(e.to_string())
[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] 148 |             Err(e) => panic!("{}", e.to_string())
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Err(e) => std::panic::panic_any(e.to_string())
[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 33.49s
[INFO] running `Command { std: "docker" "inspect" "04e5cc838aef5401544ccb72cb3d4e034278fd01d733f602f845b28d885e9dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04e5cc838aef5401544ccb72cb3d4e034278fd01d733f602f845b28d885e9dda", kill_on_drop: false }`
[INFO] [stdout] 04e5cc838aef5401544ccb72cb3d4e034278fd01d733f602f845b28d885e9dda