[INFO] cloning repository https://github.com/luyikk/acter_queue
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luyikk/acter_queue" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluyikk%2Facter_queue", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluyikk%2Facter_queue'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 17758cd2625944aed784f902cc95d519b1b22bda
[INFO] testing luyikk/acter_queue against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluyikk%2Facter_queue" "/workspace/builds/worker-100/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-100/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/luyikk/acter_queue on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/luyikk/acter_queue
[INFO] finished tweaking git repo https://github.com/luyikk/acter_queue
[INFO] tweaked toml for git repo https://github.com/luyikk/acter_queue written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35a4d425fcaefc1f8a7f457f46db71ca1cf2d2cde8fcfed54a7d9e80b90c53ea
[INFO] running `Command { std: "docker" "start" "-a" "35a4d425fcaefc1f8a7f457f46db71ca1cf2d2cde8fcfed54a7d9e80b90c53ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35a4d425fcaefc1f8a7f457f46db71ca1cf2d2cde8fcfed54a7d9e80b90c53ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35a4d425fcaefc1f8a7f457f46db71ca1cf2d2cde8fcfed54a7d9e80b90c53ea", kill_on_drop: false }`
[INFO] [stdout] 35a4d425fcaefc1f8a7f457f46db71ca1cf2d2cde8fcfed54a7d9e80b90c53ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49a415e6ebce3420ad7dc9530fe339d89f7bdb99d0eb0729e58abce372c93be6
[INFO] running `Command { std: "docker" "start" "-a" "49a415e6ebce3420ad7dc9530fe339d89f7bdb99d0eb0729e58abce372c93be6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stderr]    Compiling futures-micro v0.5.0
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling async-oneshot v0.5.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling aqueue v1.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.03s
[INFO] running `Command { std: "docker" "inspect" "49a415e6ebce3420ad7dc9530fe339d89f7bdb99d0eb0729e58abce372c93be6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49a415e6ebce3420ad7dc9530fe339d89f7bdb99d0eb0729e58abce372c93be6", kill_on_drop: false }`
[INFO] [stdout] 49a415e6ebce3420ad7dc9530fe339d89f7bdb99d0eb0729e58abce372c93be6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c701bceccd7d1710d31141fc9ec2d0d817dbb1a4486efe61acd6be664dbe7af0
[INFO] running `Command { std: "docker" "start" "-a" "c701bceccd7d1710d31141fc9ec2d0d817dbb1a4486efe61acd6be664dbe7af0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling futures-sink v0.3.17
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.6
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling openssl-probe v0.1.4
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling minimal-lexical v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling whoami v1.1.3
[INFO] [stderr]    Compiling crc-catalog v1.1.1
[INFO] [stderr]    Compiling unicode_categories v0.1.1
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling dotenv v0.15.0
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling tinyvec v1.4.0
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling crc v2.0.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling nom v7.0.0
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling openssl-sys v0.9.66
[INFO] [stderr]    Compiling libsqlite3-sys v0.22.2
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling futures-intrusive v0.4.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling sha2 v0.9.8
[INFO] [stderr]    Compiling hashlink v0.7.0
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling atoi v0.4.0
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling stringprep v0.1.2
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling sqlformat v0.1.7
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling tokio-stream v0.1.7
[INFO] [stderr]    Compiling sqlx-rt v0.5.7
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling sqlx-core v0.5.7
[INFO] [stderr]    Compiling sqlx-macros v0.5.7
[INFO] [stderr]    Compiling sqlx v0.5.7
[INFO] [stderr]    Compiling aqueue v1.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> examples/test_sqlx.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/test.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aqueue` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c701bceccd7d1710d31141fc9ec2d0d817dbb1a4486efe61acd6be664dbe7af0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c701bceccd7d1710d31141fc9ec2d0d817dbb1a4486efe61acd6be664dbe7af0", kill_on_drop: false }`
[INFO] [stdout] c701bceccd7d1710d31141fc9ec2d0d817dbb1a4486efe61acd6be664dbe7af0