[INFO] fetching crate credent 0.4.1...
[INFO] checking credent-0.4.1 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate credent 0.4.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate credent 0.4.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate credent 0.4.1
[INFO] tweaked toml for crates.io crate credent 0.4.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate credent 0.4.1 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate credent 0.4.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d261ac407ee6a0aa415c1450247e6f39304886ad47621ecfa6c81bafa49cd192
[INFO] running `Command { std: "docker" "start" "-a" "d261ac407ee6a0aa415c1450247e6f39304886ad47621ecfa6c81bafa49cd192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d261ac407ee6a0aa415c1450247e6f39304886ad47621ecfa6c81bafa49cd192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d261ac407ee6a0aa415c1450247e6f39304886ad47621ecfa6c81bafa49cd192", kill_on_drop: false }`
[INFO] [stdout] d261ac407ee6a0aa415c1450247e6f39304886ad47621ecfa6c81bafa49cd192
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15f05c871321e000aba25c1582551894b7192a02c95a0204fa514fe609adba60
[INFO] running `Command { std: "docker" "start" "-a" "15f05c871321e000aba25c1582551894b7192a02c95a0204fa514fe609adba60", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.90
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking futures-core v0.3.13
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]     Checking futures-io v0.3.13
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking async-lock v2.3.0
[INFO] [stderr]    Compiling signal-hook v0.3.7
[INFO] [stderr]    Compiling tokio v1.4.0
[INFO] [stderr]     Checking credent_cli_model v0.4.1
[INFO] [stdout] error: `credent` needs either the "backend-smol" or "backend-tokio" feature to be enabled.
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/credent_cli_model-0.4.1/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/index.crates.io-1949cf8c6b5b557f/credent_cli_model-0.4.1/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/index.crates.io-1949cf8c6b5b557f/credent_cli_model-0.4.1/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] error: could not compile `credent_cli_model` (lib) due to 3 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "15f05c871321e000aba25c1582551894b7192a02c95a0204fa514fe609adba60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15f05c871321e000aba25c1582551894b7192a02c95a0204fa514fe609adba60", kill_on_drop: false }`
[INFO] [stdout] 15f05c871321e000aba25c1582551894b7192a02c95a0204fa514fe609adba60