[INFO] cloning repository https://github.com/Dj-Codeman/rust-encore
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dj-Codeman/rust-encore" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDj-Codeman%2Frust-encore", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDj-Codeman%2Frust-encore'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cdb98c4eda559302b1963f0ecacaab89de849b69
[INFO] checking Dj-Codeman/rust-encore against try#ddcf048784667508cd676fef4667f88ae15628a3 for pr-148271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDj-Codeman%2Frust-encore" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Dj-Codeman/rust-encore
[INFO] finished tweaking git repo https://github.com/Dj-Codeman/rust-encore
[INFO] tweaked toml for git repo https://github.com/Dj-Codeman/rust-encore written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Dj-Codeman/rust-encore on toolchain ddcf048784667508cd676fef4667f88ae15628a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Dj-Codeman/rust-encore 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" "+ddcf048784667508cd676fef4667f88ae15628a3" "fetch" "--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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19cffb0b81876c550579c48a8aeda0499952d8286e0c27f828c78e764e936066
[INFO] running `Command { std: "docker" "start" "-a" "19cffb0b81876c550579c48a8aeda0499952d8286e0c27f828c78e764e936066", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19cffb0b81876c550579c48a8aeda0499952d8286e0c27f828c78e764e936066", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19cffb0b81876c550579c48a8aeda0499952d8286e0c27f828c78e764e936066", kill_on_drop: false }`
[INFO] [stdout] 19cffb0b81876c550579c48a8aeda0499952d8286e0c27f828c78e764e936066
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48759264b03fb55e2dc997b73b38a875bb0727822254436e5bd2accaeeffd8e9
[INFO] running `Command { std: "docker" "start" "-a" "48759264b03fb55e2dc997b73b38a875bb0727822254436e5bd2accaeeffd8e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling rayon-core v1.10.2
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling substring v1.4.5
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]    Compiling serde_json v1.0.93
[INFO] [stderr]     Checking generic-array v0.14.6
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking itoa v1.0.5
[INFO] [stderr]     Checking iana-time-zone v0.1.53
[INFO] [stderr]     Checking ryu v1.0.12
[INFO] [stderr]     Checking termios v0.0.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking rpassword v0.0.4
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.51/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]     Checking block-buffer v0.10.3
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking cipher v0.3.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[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" "48759264b03fb55e2dc997b73b38a875bb0727822254436e5bd2accaeeffd8e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48759264b03fb55e2dc997b73b38a875bb0727822254436e5bd2accaeeffd8e9", kill_on_drop: false }`
[INFO] [stdout] 48759264b03fb55e2dc997b73b38a875bb0727822254436e5bd2accaeeffd8e9
