[INFO] fetching crate credent 0.4.0...
[INFO] checking credent-0.4.0 against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] extracting crate credent 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate credent 0.4.0 on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate credent 0.4.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate credent 0.4.0
[INFO] tweaked toml for crates.io crate credent 0.4.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate credent 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a26ebab220dbfda5c7a2f7aa83731933fc1d28edf6a7e435151adcf35cb18d2
[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" "7a26ebab220dbfda5c7a2f7aa83731933fc1d28edf6a7e435151adcf35cb18d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a26ebab220dbfda5c7a2f7aa83731933fc1d28edf6a7e435151adcf35cb18d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a26ebab220dbfda5c7a2f7aa83731933fc1d28edf6a7e435151adcf35cb18d2", kill_on_drop: false }`
[INFO] [stdout] 7a26ebab220dbfda5c7a2f7aa83731933fc1d28edf6a7e435151adcf35cb18d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 682e1b7f895a5ec0150f36484f076fc27ef44042641c82d059254d1fc6a3df05
[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" "682e1b7f895a5ec0150f36484f076fc27ef44042641c82d059254d1fc6a3df05", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.90
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking futures-io v0.3.13
[INFO] [stderr]     Checking fastrand v1.4.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking vec-arena v1.0.0
[INFO] [stderr]    Compiling signal-hook v0.3.7
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking credent_cli_model v0.4.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stdout] error: `credent` needs either the "backend-smol" or "backend-tokio" feature to be enabled.
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/credent_cli_model-0.4.0/src/error.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | / compile_error!(
[INFO] [stdout] 11 | |     r#"`credent` needs either the "backend-smol" or "backend-tokio" feature to be enabled."#
[INFO] [stdout] 12 | | );
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `IoError` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/credent_cli_model-0.4.0/src/error.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 28 |         error: IoError,
[INFO] [stdout]    |                ^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `IoError` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/credent_cli_model-0.4.0/src/error.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 |     StdErrFlush(IoError),
[INFO] [stdout]    |                 ^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking async-lock v2.3.0
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `credent_cli_model`
[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" "682e1b7f895a5ec0150f36484f076fc27ef44042641c82d059254d1fc6a3df05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "682e1b7f895a5ec0150f36484f076fc27ef44042641c82d059254d1fc6a3df05", kill_on_drop: false }`
[INFO] [stdout] 682e1b7f895a5ec0150f36484f076fc27ef44042641c82d059254d1fc6a3df05