[INFO] cloning repository https://github.com/desbma/firstname-chooser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/desbma/firstname-chooser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdesbma%2Ffirstname-chooser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdesbma%2Ffirstname-chooser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6244ed9fa884527b08ee56013ae351e22270ffd1
[INFO] testing desbma/firstname-chooser against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdesbma%2Ffirstname-chooser" "/workspace/builds/worker-29/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-29/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/desbma/firstname-chooser on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/desbma/firstname-chooser
[INFO] finished tweaking git repo https://github.com/desbma/firstname-chooser
[INFO] tweaked toml for git repo https://github.com/desbma/firstname-chooser written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate git repo https://github.com/desbma/firstname-chooser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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 dialoguer v0.8.0
[INFO] [stderr]   Downloaded arg_enum_proc_macro v0.3.1
[INFO] [stderr]   Downloaded simple_logger v1.12.1
[INFO] [stderr]   Downloaded decorum v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e50b32022288c7fcaddc4a9e96bd08ad12d39f39f7c2eb59f7405a0ec653b351
[INFO] running `Command { std: "docker" "start" "-a" "e50b32022288c7fcaddc4a9e96bd08ad12d39f39f7c2eb59f7405a0ec653b351", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e50b32022288c7fcaddc4a9e96bd08ad12d39f39f7c2eb59f7405a0ec653b351", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e50b32022288c7fcaddc4a9e96bd08ad12d39f39f7c2eb59f7405a0ec653b351", kill_on_drop: false }`
[INFO] [stdout] e50b32022288c7fcaddc4a9e96bd08ad12d39f39f7c2eb59f7405a0ec653b351
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 202752f723e1cda33cb44f923ba51771c2c2737c0bf22e591a38957eecb5d8de
[INFO] running `Command { std: "docker" "start" "-a" "202752f723e1cda33cb44f923ba51771c2c2737c0bf22e591a38957eecb5d8de", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stderr]    Compiling simple_logger v1.12.1
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[INFO] [stderr]    Compiling crossbeam v0.8.1
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling socket2 v0.4.1
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling console v0.14.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling bzip2 v0.4.3
[INFO] [stderr]    Compiling indicatif v0.15.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling dialoguer v0.8.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.1
[INFO] [stderr]    Compiling tokio-util v0.6.7
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling async-compression v0.3.8
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling zip v0.5.13
[INFO] [stderr]    Compiling structopt v0.3.22
[INFO] [stderr]    Compiling h2 v0.3.3
[INFO] [stderr]    Compiling hyper v0.14.11
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling decorum v0.3.1
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.4
[INFO] [stderr]    Compiling firstname-chooser 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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![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 `firstname-chooser` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "202752f723e1cda33cb44f923ba51771c2c2737c0bf22e591a38957eecb5d8de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "202752f723e1cda33cb44f923ba51771c2c2737c0bf22e591a38957eecb5d8de", kill_on_drop: false }`
[INFO] [stdout] 202752f723e1cda33cb44f923ba51771c2c2737c0bf22e591a38957eecb5d8de