[INFO] cloning repository https://github.com/Vurich/rustfest-perf-workshop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Vurich/rustfest-perf-workshop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVurich%2Frustfest-perf-workshop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVurich%2Frustfest-perf-workshop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2de13b519364acdc656177438f6b134f8f3a7817
[INFO] testing Vurich/rustfest-perf-workshop against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVurich%2Frustfest-perf-workshop" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Vurich/rustfest-perf-workshop on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Vurich/rustfest-perf-workshop
[INFO] finished tweaking git repo https://github.com/Vurich/rustfest-perf-workshop
[INFO] tweaked toml for git repo https://github.com/Vurich/rustfest-perf-workshop written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/Vurich/rustfest-perf-workshop already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ascii v0.7.1
[INFO] [stderr]   Downloaded byteorder v1.2.2
[INFO] [stderr]   Downloaded combine v3.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e7009af52d5e4ca48c0431448f23a5fd125dcb07037a561080c63502e25231b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0e7009af52d5e4ca48c0431448f23a5fd125dcb07037a561080c63502e25231b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e7009af52d5e4ca48c0431448f23a5fd125dcb07037a561080c63502e25231b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e7009af52d5e4ca48c0431448f23a5fd125dcb07037a561080c63502e25231b", kill_on_drop: false }`
[INFO] [stdout] 0e7009af52d5e4ca48c0431448f23a5fd125dcb07037a561080c63502e25231b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4351c4d704bfbaa0780917993e8811fd291d92ca1c776184e13b5a2f9cd8ad22
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4351c4d704bfbaa0780917993e8811fd291d92ca1c776184e13b5a2f9cd8ad22", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling ascii v0.7.1
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling combine v3.2.0
[INFO] [stderr]    Compiling rustfest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.28s
[INFO] running `Command { std: "docker" "inspect" "4351c4d704bfbaa0780917993e8811fd291d92ca1c776184e13b5a2f9cd8ad22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4351c4d704bfbaa0780917993e8811fd291d92ca1c776184e13b5a2f9cd8ad22", kill_on_drop: false }`
[INFO] [stdout] 4351c4d704bfbaa0780917993e8811fd291d92ca1c776184e13b5a2f9cd8ad22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa58618be26fc78b9db2ca565efeb47b0f6d140bec299528d8466f1e2b55fba9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fa58618be26fc78b9db2ca565efeb47b0f6d140bec299528d8466f1e2b55fba9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustfest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(test, feature(test))]
[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 `rustfest` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "fa58618be26fc78b9db2ca565efeb47b0f6d140bec299528d8466f1e2b55fba9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa58618be26fc78b9db2ca565efeb47b0f6d140bec299528d8466f1e2b55fba9", kill_on_drop: false }`
[INFO] [stdout] fa58618be26fc78b9db2ca565efeb47b0f6d140bec299528d8466f1e2b55fba9