[INFO] cloning repository https://github.com/valiantlynx/rust_on_aws
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/valiantlynx/rust_on_aws" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaliantlynx%2Frust_on_aws", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaliantlynx%2Frust_on_aws'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e4f0ad3315af7abd5babe8ed966bdbac860f227f
[INFO] checking valiantlynx/rust_on_aws against try#6757d700f93f6d16c8b39cf79e96b019bd570e7d for pr-155299
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaliantlynx%2Frust_on_aws" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/valiantlynx/rust_on_aws
[INFO] finished tweaking git repo https://github.com/valiantlynx/rust_on_aws
[INFO] tweaked toml for git repo https://github.com/valiantlynx/rust_on_aws written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/valiantlynx/rust_on_aws on toolchain 6757d700f93f6d16c8b39cf79e96b019bd570e7d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/valiantlynx/rust_on_aws 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" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded colored v1.9.3
[INFO] [stderr]   Downloaded lambda_runtime v0.4.1
[INFO] [stderr]   Downloaded simple_logger v1.16.0
[INFO] [stderr]   Downloaded tracing-error v0.1.2
[INFO] [stderr]   Downloaded aws-smithy-async v0.33.1
[INFO] [stderr]   Downloaded aws-smithy-query v0.33.1
[INFO] [stderr]   Downloaded aws-sig-auth v0.3.0
[INFO] [stderr]   Downloaded aws-smithy-xml v0.33.1
[INFO] [stderr]   Downloaded aws-http v0.3.0
[INFO] [stderr]   Downloaded aws-endpoint v0.3.0
[INFO] [stderr]   Downloaded aws-sigv4 v0.3.0
[INFO] [stderr]   Downloaded aws-smithy-client v0.33.1
[INFO] [stderr]   Downloaded aws-sdk-sts v0.3.0
[INFO] [stderr]   Downloaded aws-smithy-http v0.33.1
[INFO] [stderr]   Downloaded aws-smithy-http-tower v0.33.1
[INFO] [stderr]   Downloaded aws-sdk-dynamodb v0.3.0
[INFO] [stderr]   Downloaded aws-smithy-json v0.33.1
[INFO] [stderr]   Downloaded aws-smithy-types v0.33.1
[INFO] [stderr]   Downloaded aws-types v0.3.0
[INFO] [stderr]   Downloaded bytes-utils v0.1.3
[INFO] [stderr]   Downloaded aws-config v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c705bf113b225638a023d8a480266994c71e327315cf4f844c8d732a26e2844
[INFO] running `Command { std: "docker" "start" "-a" "2c705bf113b225638a023d8a480266994c71e327315cf4f844c8d732a26e2844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c705bf113b225638a023d8a480266994c71e327315cf4f844c8d732a26e2844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c705bf113b225638a023d8a480266994c71e327315cf4f844c8d732a26e2844", kill_on_drop: false }`
[INFO] [stdout] 2c705bf113b225638a023d8a480266994c71e327315cf4f844c8d732a26e2844
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6757d700f93f6d16c8b39cf79e96b019bd570e7d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff95149a03bbbb59fd98d1d9cd27e7a868b181867240541fdcb0bac5ede0f12a
[INFO] running `Command { std: "docker" "start" "-a" "ff95149a03bbbb59fd98d1d9cd27e7a868b181867240541fdcb0bac5ede0f12a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling tokio v1.27.0
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]    Compiling time-macros v0.2.8
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a feature with a similar name: `proc_macro_span_file`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout] 92 +     feature(proc_macro_span, proc_macro_span_file)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]     Checking indexmap v1.9.3
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]     Checking try-lock v0.2.4
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking mio v0.8.6
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ff95149a03bbbb59fd98d1d9cd27e7a868b181867240541fdcb0bac5ede0f12a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff95149a03bbbb59fd98d1d9cd27e7a868b181867240541fdcb0bac5ede0f12a", kill_on_drop: false }`
[INFO] [stdout] ff95149a03bbbb59fd98d1d9cd27e7a868b181867240541fdcb0bac5ede0f12a