[INFO] cloning repository https://github.com/Jaxydog/mr-manager
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jaxydog/mr-manager" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaxydog%2Fmr-manager", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaxydog%2Fmr-manager'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6bc414391a667d03dcc2700809f1783d6b0a29a6
[INFO] checking Jaxydog/mr-manager/6bc414391a667d03dcc2700809f1783d6b0a29a6 against master#613bdd49978298648ed05ace086bd1ecad54b44a for pr-136458
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaxydog%2Fmr-manager" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jaxydog/mr-manager on toolchain 613bdd49978298648ed05ace086bd1ecad54b44a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/Jaxydog/mr-manager
[INFO] finished tweaking git repo https://github.com/Jaxydog/mr-manager
[INFO] tweaked toml for git repo https://github.com/Jaxydog/mr-manager written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Jaxydog/mr-manager 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" "+613bdd49978298648ed05ace086bd1ecad54b44a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/serenity-rs/serenity`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc0aa430b4fc4c1df8a08050cc9edc2e891b7428839c1133212bee341f6b8b98
[INFO] running `Command { std: "docker" "start" "-a" "bc0aa430b4fc4c1df8a08050cc9edc2e891b7428839c1133212bee341f6b8b98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc0aa430b4fc4c1df8a08050cc9edc2e891b7428839c1133212bee341f6b8b98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc0aa430b4fc4c1df8a08050cc9edc2e891b7428839c1133212bee341f6b8b98", kill_on_drop: false }`
[INFO] [stdout] bc0aa430b4fc4c1df8a08050cc9edc2e891b7428839c1133212bee341f6b8b98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+613bdd49978298648ed05ace086bd1ecad54b44a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 45f28bbdbd2d8e06a9849589ce3cb7445eab8b2366219a46ff9132811469a335
[INFO] running `Command { std: "docker" "start" "-a" "45f28bbdbd2d8e06a9849589ce3cb7445eab8b2366219a46ff9132811469a335", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]    Compiling cc v1.0.77
[INFO] [stderr]    Compiling serde_derive v1.0.150
[INFO] [stderr]    Compiling parking_lot_core v0.9.5
[INFO] [stderr]    Compiling serde v1.0.150
[INFO] [stderr]     Checking bytes v1.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling tokio v1.23.0
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling rustls v0.20.7
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]    Compiling async-trait v0.1.59
[INFO] [stderr]    Compiling serde_json v1.0.89
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking encoding_rs v0.8.31
[INFO] [stderr]    Compiling serenity v0.11.5 (https://github.com/serenity-rs/serenity?branch=next#943988c6)
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]     Checking iana-time-zone v0.1.53
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking rustls-pemfile v1.0.1
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling paste v1.0.9
[INFO] [stderr]     Checking time-core v0.1.0
[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" "45f28bbdbd2d8e06a9849589ce3cb7445eab8b2366219a46ff9132811469a335", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45f28bbdbd2d8e06a9849589ce3cb7445eab8b2366219a46ff9132811469a335", kill_on_drop: false }`
[INFO] [stdout] 45f28bbdbd2d8e06a9849589ce3cb7445eab8b2366219a46ff9132811469a335