[INFO] fetching crate asn1_der 0.7.2...
[INFO] checking asn1_der-0.7.2 against try#8b72f65b805cbe4c261de45030d663f524f27376 for pr-78991
[INFO] extracting crate asn1_der 0.7.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate asn1_der 0.7.2 on toolchain 8b72f65b805cbe4c261de45030d663f524f27376
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate asn1_der 0.7.2
[INFO] finished tweaking crates.io crate asn1_der 0.7.2
[INFO] tweaked toml for crates.io crate asn1_der 0.7.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded no-panic v0.1.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+8b72f65b805cbe4c261de45030d663f524f27376" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b952c2d85da24fbaec02cde0c645fab5b3a5c09a39d761cebb003e1dc2b1c92
[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" "6b952c2d85da24fbaec02cde0c645fab5b3a5c09a39d761cebb003e1dc2b1c92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b952c2d85da24fbaec02cde0c645fab5b3a5c09a39d761cebb003e1dc2b1c92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b952c2d85da24fbaec02cde0c645fab5b3a5c09a39d761cebb003e1dc2b1c92", kill_on_drop: false }`
[INFO] [stdout] 6b952c2d85da24fbaec02cde0c645fab5b3a5c09a39d761cebb003e1dc2b1c92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+8b72f65b805cbe4c261de45030d663f524f27376" "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] cf768c45daeacf913b750516544b4164e952d6e82641412ee7f70ac1b6d6127b
[INFO] running `Command { std: "docker" "start" "-a" "cf768c45daeacf913b750516544b4164e952d6e82641412ee7f70ac1b6d6127b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking asn1_der v0.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/typed/null.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 |             _ => Err(einval!("DER object is not a valid null object"))
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unreachable pattern
[INFO] [stdout]    --> src/typed/null.rs:43:4
[INFO] [stdout]     |
[INFO] [stdout] 43  |             _ => Err(einval!("DER object is not a valid null object"))
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:121:26
[INFO] [stdout]     |
[INFO] [stdout] 121 | #![cfg_attr(test, forbid(warnings))]
[INFO] [stdout]     |                          ^^^^^^^^
[INFO] [stdout]     = note: `#[forbid(unreachable_patterns)]` implied by `#[forbid(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `asn1_der`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cf768c45daeacf913b750516544b4164e952d6e82641412ee7f70ac1b6d6127b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf768c45daeacf913b750516544b4164e952d6e82641412ee7f70ac1b6d6127b", kill_on_drop: false }`
[INFO] [stdout] cf768c45daeacf913b750516544b4164e952d6e82641412ee7f70ac1b6d6127b