[INFO] cloning repository https://github.com/julianandrews/yablocks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/julianandrews/yablocks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulianandrews%2Fyablocks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulianandrews%2Fyablocks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 80f8f25d441c60538e9df1b391c44f30a1f3e5ca
[INFO] checking julianandrews/yablocks against try#fafe42c59556a4233f03dd0d900b575a9afeece8 for pr-143764
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulianandrews%2Fyablocks" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/julianandrews/yablocks
[INFO] finished tweaking git repo https://github.com/julianandrews/yablocks
[INFO] tweaked toml for git repo https://github.com/julianandrews/yablocks written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/julianandrews/yablocks on toolchain fafe42c59556a4233f03dd0d900b575a9afeece8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/julianandrews/yablocks 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" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking julianandrews/yablocks against try#fafe42c59556a4233f03dd0d900b575a9afeece8 for pr-143764
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulianandrews%2Fyablocks" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/julianandrews/yablocks
[INFO] finished tweaking git repo https://github.com/julianandrews/yablocks
[INFO] tweaked toml for git repo https://github.com/julianandrews/yablocks written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/julianandrews/yablocks on toolchain fafe42c59556a4233f03dd0d900b575a9afeece8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/julianandrews/yablocks 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" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rtnetlink v0.11.0
[INFO] [stderr]   Downloaded libpulse-sys v1.19.3
[INFO] [stderr]   Downloaded buffering v0.4.2
[INFO] [stderr]   Downloaded neli v0.4.4
[INFO] [stderr]   Downloaded nl80211 v0.0.2
[INFO] [stderr]   Downloaded procfs v0.14.1
[INFO] [stderr]   Downloaded libpulse-binding v2.26.0
[INFO] [stderr]   Downloaded netlink-packet-route v0.13.0
[INFO] [stderr]   Downloaded buffering v0.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5faa07aa404124e68bf70fb935f4e978aeac2e9e8513028749330b3511f7805
[INFO] running `Command { std: "docker" "start" "-a" "c5faa07aa404124e68bf70fb935f4e978aeac2e9e8513028749330b3511f7805", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5faa07aa404124e68bf70fb935f4e978aeac2e9e8513028749330b3511f7805", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5faa07aa404124e68bf70fb935f4e978aeac2e9e8513028749330b3511f7805", kill_on_drop: false }`
[INFO] [stdout] c5faa07aa404124e68bf70fb935f4e978aeac2e9e8513028749330b3511f7805
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea7b78d4541a4a9a2631fd7c595b7f7fd2ab6f591a123fad90aa2c5abcf763be
[INFO] running `Command { std: "docker" "start" "-a" "ea7b78d4541a4a9a2631fd7c595b7f7fd2ab6f591a123fad90aa2c5abcf763be", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling uncased v0.9.7
[INFO] [stderr]    Compiling siphasher v0.3.10
[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 futures-core v0.3.25
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling phf_shared v0.11.1
[INFO] [stderr]    Compiling futures-channel v0.3.25
[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" "ea7b78d4541a4a9a2631fd7c595b7f7fd2ab6f591a123fad90aa2c5abcf763be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea7b78d4541a4a9a2631fd7c595b7f7fd2ab6f591a123fad90aa2c5abcf763be", kill_on_drop: false }`
[INFO] [stdout] ea7b78d4541a4a9a2631fd7c595b7f7fd2ab6f591a123fad90aa2c5abcf763be