[INFO] cloning repository https://github.com/matrix-org/matrix-ircd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matrix-org/matrix-ircd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatrix-org%2Fmatrix-ircd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatrix-org%2Fmatrix-ircd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9177d285aa85c32259abd7cc4c7aa1e32076959
[INFO] checking matrix-org/matrix-ircd against master#6162f6f12339aa81fe16b8a64644ead497e411b2 for pr-113240
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatrix-org%2Fmatrix-ircd" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matrix-org/matrix-ircd on toolchain 6162f6f12339aa81fe16b8a64644ead497e411b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matrix-org/matrix-ircd
[INFO] finished tweaking git repo https://github.com/matrix-org/matrix-ircd
[INFO] tweaked toml for git repo https://github.com/matrix-org/matrix-ircd written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/matrix-org/matrix-ircd 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" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/erikjohnston/tasked-futures.git`
[INFO] [stderr]     Updating git repository `https://github.com/tokio-rs/tokio-timer`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-proto v0.1.1
[INFO] [stderr]   Downloaded netbuf v0.4.1
[INFO] [stderr]   Downloaded pest v0.4.1
[INFO] [stderr]   Downloaded take v0.1.0
[INFO] [stderr]   Downloaded extend v0.1.2
[INFO] [stderr]   Downloaded slog-async v2.7.0
[INFO] [stderr]   Downloaded slog-term v2.9.0
[INFO] [stderr]   Downloaded syn v2.0.12
[INFO] [stderr]   Downloaded mockito v0.25.3
[INFO] [stderr]   Downloaded smallvec v0.2.1
[INFO] [stderr]   Downloaded tokio-service v0.1.0
[INFO] [stderr]   Downloaded slab v0.3.0
[INFO] [stderr]   Downloaded assert-json-diff v1.1.0
[INFO] [stderr]   Downloaded tokio-tls v0.2.1
[INFO] [stderr]   Downloaded tokio-dns-unofficial v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2dfa880d78430175b22ad180b18459557d5d3e8da81dec533a9145a9b563f42f
[INFO] running `Command { std: "docker" "start" "-a" "2dfa880d78430175b22ad180b18459557d5d3e8da81dec533a9145a9b563f42f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dfa880d78430175b22ad180b18459557d5d3e8da81dec533a9145a9b563f42f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dfa880d78430175b22ad180b18459557d5d3e8da81dec533a9145a9b563f42f", kill_on_drop: false }`
[INFO] [stdout] 2dfa880d78430175b22ad180b18459557d5d3e8da81dec533a9145a9b563f42f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92587f3e59e2f0d792f57eef8971cd5df5a6b6bec92230d594227290934480d5
[INFO] running `Command { std: "docker" "start" "-a" "92587f3e59e2f0d792f57eef8971cd5df5a6b6bec92230d594227290934480d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling proc-macro2 v1.0.54
[INFO] [stderr]    Compiling serde_derive v1.0.159
[INFO] [stderr]    Compiling openssl-sys v0.9.83
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling serde v1.0.159
[INFO] [stderr]    Compiling openssl v0.10.48
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling serde_json v1.0.95
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]    Compiling time-macros v0.2.8
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking time-core v0.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]    Compiling slog-async v2.7.0
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.54/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 tokio-service v0.1.0
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ipnet v2.7.2
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking tokio-timer v0.1.2 (https://github.com/tokio-rs/tokio-timer#2b069e92)
[INFO] [stderr]     Checking tasked-futures v0.1.0 (https://github.com/erikjohnston/tasked-futures.git#43ef731e)
[INFO] [stderr]     Checking netbuf v0.4.1
[INFO] [stderr]     Checking pest v0.4.1
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "92587f3e59e2f0d792f57eef8971cd5df5a6b6bec92230d594227290934480d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92587f3e59e2f0d792f57eef8971cd5df5a6b6bec92230d594227290934480d5", kill_on_drop: false }`
[INFO] [stdout] 92587f3e59e2f0d792f57eef8971cd5df5a6b6bec92230d594227290934480d5