[INFO] fetching crate openssh-keys 0.4.2...
[INFO] checking openssh-keys-0.4.2 against beta for pr-78714
[INFO] extracting crate openssh-keys 0.4.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate openssh-keys 0.4.2 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate openssh-keys 0.4.2
[INFO] finished tweaking crates.io crate openssh-keys 0.4.2
[INFO] tweaked toml for crates.io crate openssh-keys 0.4.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate openssh-keys 0.4.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] af74dc146c075b5c8b33963ad643b9854205c3ced5e5bd5bcd0a814dc9801bee
[INFO] running `Command { std: "docker" "start" "-a" "af74dc146c075b5c8b33963ad643b9854205c3ced5e5bd5bcd0a814dc9801bee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af74dc146c075b5c8b33963ad643b9854205c3ced5e5bd5bcd0a814dc9801bee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af74dc146c075b5c8b33963ad643b9854205c3ced5e5bd5bcd0a814dc9801bee", kill_on_drop: false }`
[INFO] [stdout] af74dc146c075b5c8b33963ad643b9854205c3ced5e5bd5bcd0a814dc9801bee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e53a24432572f9eaea3ae93df49e559285411dbb975263257304b8cd01553b9
[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" "0e53a24432572f9eaea3ae93df49e559285411dbb975263257304b8cd01553b9", kill_on_drop: false }`
[INFO] [stderr]     Checking base64 v0.12.2
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling generic-array v0.14.2
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]     Checking dirs v3.0.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.8.0
[INFO] [stderr]     Checking md-5 v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.0
[INFO] [stderr]     Checking openssh-keys v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `String::split_off` that must be used
[INFO] [stdout]    --> src/lib.rs:510:13
[INFO] [stdout]     |
[INFO] [stdout] 510 |             fingerprint.split_off(l);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `String::split_off` that must be used
[INFO] [stdout]    --> src/lib.rs:510:13
[INFO] [stdout]     |
[INFO] [stdout] 510 |             fingerprint.split_off(l);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.16s
[INFO] running `Command { std: "docker" "inspect" "0e53a24432572f9eaea3ae93df49e559285411dbb975263257304b8cd01553b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e53a24432572f9eaea3ae93df49e559285411dbb975263257304b8cd01553b9", kill_on_drop: false }`
[INFO] [stdout] 0e53a24432572f9eaea3ae93df49e559285411dbb975263257304b8cd01553b9