[INFO] cloning repository https://github.com/oliverlee/capgains
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oliverlee/capgains" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foliverlee%2Fcapgains", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foliverlee%2Fcapgains'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 53367d9dfc37a2c7da8fe61ccb91c09b6c504903
[INFO] testing oliverlee/capgains against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foliverlee%2Fcapgains" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oliverlee/capgains on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/oliverlee/capgains
[INFO] finished tweaking git repo https://github.com/oliverlee/capgains
[INFO] tweaked toml for git repo https://github.com/oliverlee/capgains written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/oliverlee/capgains already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77de597a99fccbdbcee759471fdcc085dd4820d759cfd0f53aceb88f0545dafa
[INFO] running `Command { std: "docker" "start" "-a" "77de597a99fccbdbcee759471fdcc085dd4820d759cfd0f53aceb88f0545dafa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77de597a99fccbdbcee759471fdcc085dd4820d759cfd0f53aceb88f0545dafa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77de597a99fccbdbcee759471fdcc085dd4820d759cfd0f53aceb88f0545dafa", kill_on_drop: false }`
[INFO] [stdout] 77de597a99fccbdbcee759471fdcc085dd4820d759cfd0f53aceb88f0545dafa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db249d1074d1baa95cba7869c0bdd89a5382c5e307736b7b24a5fb49193b78ab
[INFO] running `Command { std: "docker" "start" "-a" "db249d1074d1baa95cba7869c0bdd89a5382c5e307736b7b24a5fb49193b78ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling serde v1.0.60
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling proc-macro2 v0.4.3
[INFO] [stderr]    Compiling csv-core v0.1.4
[INFO] [stderr]    Compiling quote v0.6.2
[INFO] [stderr]    Compiling syn v0.14.0
[INFO] [stderr]    Compiling chrono v0.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.60
[INFO] [stderr]    Compiling csv v1.0.0
[INFO] [stderr]    Compiling capgains v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_get_key_value)]
[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 `capgains`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "db249d1074d1baa95cba7869c0bdd89a5382c5e307736b7b24a5fb49193b78ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db249d1074d1baa95cba7869c0bdd89a5382c5e307736b7b24a5fb49193b78ab", kill_on_drop: false }`
[INFO] [stdout] db249d1074d1baa95cba7869c0bdd89a5382c5e307736b7b24a5fb49193b78ab
