[INFO] fetching crate update-ssh-keys 0.7.0...
[INFO] checking update-ssh-keys-0.7.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate update-ssh-keys 0.7.0 into /workspace/builds/worker-57/source
[INFO] validating manifest of crates.io crate update-ssh-keys 0.7.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate update-ssh-keys 0.7.0
[INFO] finished tweaking crates.io crate update-ssh-keys 0.7.0
[INFO] tweaked toml for crates.io crate update-ssh-keys 0.7.0 written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] crate crates.io crate update-ssh-keys 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fs2 v0.4.3
[INFO] [stderr]   Downloaded users v0.11.0
[INFO] [stderr]   Downloaded sha2 v0.9.1
[INFO] [stderr]   Downloaded openssh-keys v0.4.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40bb0bb665eada6f3c680ffc0ad6114570b80b90168af60bcc911da738c5213b
[INFO] running `Command { std: "docker" "start" "-a" "40bb0bb665eada6f3c680ffc0ad6114570b80b90168af60bcc911da738c5213b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40bb0bb665eada6f3c680ffc0ad6114570b80b90168af60bcc911da738c5213b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40bb0bb665eada6f3c680ffc0ad6114570b80b90168af60bcc911da738c5213b", kill_on_drop: false }`
[INFO] [stdout] 40bb0bb665eada6f3c680ffc0ad6114570b80b90168af60bcc911da738c5213b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dec1e5266681f8fe5b00ed17d898691175352e3d5339bec19c47b95b728c9de
[INFO] running `Command { std: "docker" "start" "-a" "3dec1e5266681f8fe5b00ed17d898691175352e3d5339bec19c47b95b728c9de", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking users v0.11.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking md-5 v0.9.1
[INFO] [stderr]     Checking sha2 v0.9.1
[INFO] [stderr]     Checking openssh-keys v0.4.2
[INFO] [stderr]     Checking update-ssh-keys v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `lock`
[INFO] [stdout]    --> src/lib.rs:149:5
[INFO] [stdout]     |
[INFO] [stdout] 149 |     lock: FileLock,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lock`
[INFO] [stdout]    --> src/lib.rs:149:5
[INFO] [stdout]     |
[INFO] [stdout] 149 |     lock: FileLock,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/compat_python.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 |           panic!(format!(
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 15 | |             "\nstdout: {}\nstderr: {}",
[INFO] [stdout] 16 | |             String::from_utf8_lossy(&result.stdout),
[INFO] [stdout] 17 | |             String::from_utf8_lossy(&result.stderr)
[INFO] [stdout] 18 | |         ));
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[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] 14 ~         panic!(
[INFO] [stdout] 15 |             "\nstdout: {}\nstderr: {}",
[INFO] [stdout] 16 |             String::from_utf8_lossy(&result.stdout),
[INFO] [stdout] 17 |             String::from_utf8_lossy(&result.stderr)
[INFO] [stdout] 18 ~         );
[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 7.65s
[INFO] running `Command { std: "docker" "inspect" "3dec1e5266681f8fe5b00ed17d898691175352e3d5339bec19c47b95b728c9de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dec1e5266681f8fe5b00ed17d898691175352e3d5339bec19c47b95b728c9de", kill_on_drop: false }`
[INFO] [stdout] 3dec1e5266681f8fe5b00ed17d898691175352e3d5339bec19c47b95b728c9de