[INFO] cloning repository https://github.com/tifrel/tokio-chat-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tifrel/tokio-chat-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftifrel%2Ftokio-chat-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftifrel%2Ftokio-chat-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d64039592e3005bb443dd03d228d9eb221ebe90a
[INFO] building tifrel/tokio-chat-server against try#c38f3f86763ea281f7c555c13ef11baad4a4fff4 for pr-111698
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftifrel%2Ftokio-chat-server" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tifrel/tokio-chat-server on toolchain c38f3f86763ea281f7c555c13ef11baad4a4fff4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c38f3f86763ea281f7c555c13ef11baad4a4fff4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tifrel/tokio-chat-server
[INFO] finished tweaking git repo https://github.com/tifrel/tokio-chat-server
[INFO] tweaked toml for git repo https://github.com/tifrel/tokio-chat-server written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tifrel/tokio-chat-server 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" "+c38f3f86763ea281f7c555c13ef11baad4a4fff4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+c38f3f86763ea281f7c555c13ef11baad4a4fff4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] faa14481b179948a5a9a9b97402e8d33c5d4eed7e8797c55dd930577cc8813a2
[INFO] running `Command { std: "docker" "start" "-a" "faa14481b179948a5a9a9b97402e8d33c5d4eed7e8797c55dd930577cc8813a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "faa14481b179948a5a9a9b97402e8d33c5d4eed7e8797c55dd930577cc8813a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faa14481b179948a5a9a9b97402e8d33c5d4eed7e8797c55dd930577cc8813a2", kill_on_drop: false }`
[INFO] [stdout] faa14481b179948a5a9a9b97402e8d33c5d4eed7e8797c55dd930577cc8813a2
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+c38f3f86763ea281f7c555c13ef11baad4a4fff4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0c144934f50f86ca5b4629b1853b36524ecc0d4f21e7a57b31229397b0896d7
[INFO] running `Command { std: "docker" "start" "-a" "a0c144934f50f86ca5b4629b1853b36524ecc0d4f21e7a57b31229397b0896d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.105
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling tokio v1.12.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.7.14
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling tokio-macros v1.5.0
[INFO] [stderr] thread 'rustc' panicked at 'assertion failed: pos.get() <= self.position()', compiler/rustc_metadata/src/rmeta/encoder.rs:447:9
[INFO] [stderr] error: could not compile `tokio` (lib)
[INFO] running `Command { std: "docker" "inspect" "a0c144934f50f86ca5b4629b1853b36524ecc0d4f21e7a57b31229397b0896d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0c144934f50f86ca5b4629b1853b36524ecc0d4f21e7a57b31229397b0896d7", kill_on_drop: false }`
[INFO] [stdout] a0c144934f50f86ca5b4629b1853b36524ecc0d4f21e7a57b31229397b0896d7