[INFO] cloning repository https://github.com/vorner/duprm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vorner/duprm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvorner%2Fduprm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvorner%2Fduprm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f5c96511c2964b7cb4127f8ae50b1bf3f3926373
[INFO] testing vorner/duprm against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvorner%2Fduprm" "/workspace/builds/worker-98/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-98/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vorner/duprm 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/vorner/duprm
[INFO] finished tweaking git repo https://github.com/vorner/duprm
[INFO] tweaked toml for git repo https://github.com/vorner/duprm written to /workspace/builds/worker-98/source/Cargo.toml
[INFO] crate git repo https://github.com/vorner/duprm 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 futures-cpupool v0.1.5
[INFO] [stderr]   Downloaded log v0.3.7
[INFO] [stderr]   Downloaded num_cpus v1.4.0
[INFO] [stderr]   Downloaded futures v0.1.13
[INFO] [stderr]   Downloaded thread-id v3.1.0
[INFO] [stderr]   Downloaded thread_local v0.3.3
[INFO] [stderr]   Downloaded regex v0.2.1
[INFO] [stderr]   Downloaded regex-syntax v0.4.0
[INFO] [stderr]   Downloaded libc v0.2.22
[INFO] [stderr]   Downloaded typed-arena v1.3.0
[INFO] [stderr]   Downloaded env_logger v0.4.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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] fb1ceefa3f9d70b1f107dc3d5984c6b9792a4efef64908d71b7bf7342302999e
[INFO] running `Command { std: "docker" "start" "-a" "fb1ceefa3f9d70b1f107dc3d5984c6b9792a4efef64908d71b7bf7342302999e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb1ceefa3f9d70b1f107dc3d5984c6b9792a4efef64908d71b7bf7342302999e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb1ceefa3f9d70b1f107dc3d5984c6b9792a4efef64908d71b7bf7342302999e", kill_on_drop: false }`
[INFO] [stdout] fb1ceefa3f9d70b1f107dc3d5984c6b9792a4efef64908d71b7bf7342302999e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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] 25727fa9859740807550c5c0654367cc81511f3b057ddcf887d42e036a23e84e
[INFO] running `Command { std: "docker" "start" "-a" "25727fa9859740807550c5c0654367cc81511f3b057ddcf887d42e036a23e84e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.22
[INFO] [stderr]    Compiling regex-syntax v0.4.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling log v0.3.7
[INFO] [stderr]    Compiling futures v0.1.13
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling typed-arena v1.3.0
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling thread-id v3.1.0
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling num_cpus v1.4.0
[INFO] [stderr]    Compiling thread_local v0.3.3
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling futures-cpupool v0.1.5
[INFO] [stderr]    Compiling regex v0.2.1
[INFO] [stderr]    Compiling env_logger v0.4.2
[INFO] [stderr]    Compiling duprm 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(drop_types_in_const)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `drop_types_in_const` has been stable since 1.22.0 and no longer requires an attribute to enable
[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 `duprm` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "25727fa9859740807550c5c0654367cc81511f3b057ddcf887d42e036a23e84e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25727fa9859740807550c5c0654367cc81511f3b057ddcf887d42e036a23e84e", kill_on_drop: false }`
[INFO] [stdout] 25727fa9859740807550c5c0654367cc81511f3b057ddcf887d42e036a23e84e