[INFO] cloning repository https://github.com/0x7030676e31/syncer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0x7030676e31/syncer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x7030676e31%2Fsyncer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x7030676e31%2Fsyncer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 82d5b9328c7bd0f80e31ad18cb6c52c0031109f4
[INFO] checking 0x7030676e31/syncer against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0x7030676e31%2Fsyncer" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/0x7030676e31/syncer
[INFO] finished tweaking git repo https://github.com/0x7030676e31/syncer
[INFO] tweaked toml for git repo https://github.com/0x7030676e31/syncer written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/0x7030676e31/syncer on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/0x7030676e31/syncer 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded netlink-packet-core v0.7.0
[INFO] [stderr]   Downloaded netlink-packet-utils v0.5.2
[INFO] [stderr]   Downloaded netlink-sys v0.8.7
[INFO] [stderr]   Downloaded dlopen2 v0.5.0
[INFO] [stderr]   Downloaded netdev v0.31.0
[INFO] [stderr]   Downloaded anyhow v1.0.94
[INFO] [stderr]   Downloaded cc v1.2.4
[INFO] [stderr]   Downloaded netlink-packet-route v0.17.1
[INFO] [stderr]   Downloaded syn v2.0.90
[INFO] [stderr]   Downloaded object v0.36.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b96e6ed8e16ac5dec52f90011e0f45820b056513da4d10674ff71ef71193a7e8
[INFO] running `Command { std: "docker" "start" "-a" "b96e6ed8e16ac5dec52f90011e0f45820b056513da4d10674ff71ef71193a7e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b96e6ed8e16ac5dec52f90011e0f45820b056513da4d10674ff71ef71193a7e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b96e6ed8e16ac5dec52f90011e0f45820b056513da4d10674ff71ef71193a7e8", kill_on_drop: false }`
[INFO] [stdout] b96e6ed8e16ac5dec52f90011e0f45820b056513da4d10674ff71ef71193a7e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99dc4168b2a456a07cf80277448993cd35c23d2d9a16d7c8d1adff9868f10ed7
[INFO] running `Command { std: "docker" "start" "-a" "99dc4168b2a456a07cf80277448993cd35c23d2d9a16d7c8d1adff9868f10ed7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]     Checking pin-project-lite v0.2.15
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking futures-io v0.3.31
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling cc v1.2.4
[INFO] [stderr]     Checking constant_time_eq v0.3.1
[INFO] [stderr]     Checking ipnet v2.10.1
[INFO] [stderr]     Checking bytes v1.9.0
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking is-terminal v0.4.13
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]     Checking socket2 v0.5.8
[INFO] [stderr]     Checking netdev v0.31.0
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]    Compiling blake3 v1.5.5
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking pretty_env_logger v0.5.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]     Checking tokio v1.42.0
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking syncer v1.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/server.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ptr_as_ref_unchecked)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `ptr_as_ref_unchecked` has been stable since 1.95.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/server.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ptr_as_ref_unchecked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/server.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ptr_as_ref_unchecked)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `ptr_as_ref_unchecked` has been stable since 1.95.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/server.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ptr_as_ref_unchecked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syncer` (bin "server") due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syncer` (bin "server" test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "99dc4168b2a456a07cf80277448993cd35c23d2d9a16d7c8d1adff9868f10ed7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99dc4168b2a456a07cf80277448993cd35c23d2d9a16d7c8d1adff9868f10ed7", kill_on_drop: false }`
[INFO] [stdout] 99dc4168b2a456a07cf80277448993cd35c23d2d9a16d7c8d1adff9868f10ed7