[INFO] fetching crate update-ssh-keys 0.7.0...
[INFO] checking update-ssh-keys-0.7.0 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate update-ssh-keys 0.7.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate update-ssh-keys 0.7.0 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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-7/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded block-buffer v0.9.0
[INFO] [stderr]   Downloaded fs2 v0.4.3
[INFO] [stderr]   Downloaded cpuid-bool v0.1.2
[INFO] [stderr]   Downloaded md-5 v0.9.1
[INFO] [stderr]   Downloaded hermit-abi v0.1.17
[INFO] [stderr]   Downloaded typenum v1.12.0
[INFO] [stderr]   Downloaded base64 v0.12.3
[INFO] [stderr]   Downloaded generic-array v0.14.4
[INFO] [stderr]   Downloaded log v0.4.11
[INFO] [stderr]   Downloaded version_check v0.9.2
[INFO] [stderr]   Downloaded digest v0.9.0
[INFO] [stderr]   Downloaded sha2 v0.9.1
[INFO] [stderr]   Downloaded opaque-debug v0.3.0
[INFO] [stderr]   Downloaded users v0.11.0
[INFO] [stderr]   Downloaded byteorder v1.3.4
[INFO] [stderr]   Downloaded openssh-keys v0.4.2
[INFO] [stderr]   Downloaded error-chain v0.12.4
[INFO] [stderr]   Downloaded libc v0.2.79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3fdc31a88cad8ee6648f39a0aa71bd642c5168a21c92d356c29c0a83ef40f954
[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" "3fdc31a88cad8ee6648f39a0aa71bd642c5168a21c92d356c29c0a83ef40f954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fdc31a88cad8ee6648f39a0aa71bd642c5168a21c92d356c29c0a83ef40f954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fdc31a88cad8ee6648f39a0aa71bd642c5168a21c92d356c29c0a83ef40f954", kill_on_drop: false }`
[INFO] [stdout] 3fdc31a88cad8ee6648f39a0aa71bd642c5168a21c92d356c29c0a83ef40f954
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 837734412d3621f73324b554396e2874276aa461131e78933b53ee0190e613cf
[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" "837734412d3621f73324b554396e2874276aa461131e78933b53ee0190e613cf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking users v0.11.0
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking clap v2.33.3
[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: 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_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] 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 11.17s
[INFO] running `Command { std: "docker" "inspect" "837734412d3621f73324b554396e2874276aa461131e78933b53ee0190e613cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "837734412d3621f73324b554396e2874276aa461131e78933b53ee0190e613cf", kill_on_drop: false }`
[INFO] [stdout] 837734412d3621f73324b554396e2874276aa461131e78933b53ee0190e613cf