[INFO] cloning repository https://github.com/mmastrac/rust-ctor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mmastrac/rust-ctor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmastrac%2Frust-ctor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmastrac%2Frust-ctor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 93e8557ab8508f7877bfc24deddcd26b9257f01b
[INFO] checking mmastrac/rust-ctor against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmastrac%2Frust-ctor" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mmastrac/rust-ctor on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mmastrac/rust-ctor
[INFO] finished tweaking git repo https://github.com/mmastrac/rust-ctor
[INFO] tweaked toml for git repo https://github.com/mmastrac/rust-ctor written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mmastrac/rust-ctor already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dlopen_derive v0.1.4
[INFO] [stderr]   Downloaded libc-print v0.1.16
[INFO] [stderr]   Downloaded dlopen v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff4af14bf0eb6b128de3a5d1be96654da943c5c3e4acce3e703bc788f77d1111
[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" "ff4af14bf0eb6b128de3a5d1be96654da943c5c3e4acce3e703bc788f77d1111", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff4af14bf0eb6b128de3a5d1be96654da943c5c3e4acce3e703bc788f77d1111", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff4af14bf0eb6b128de3a5d1be96654da943c5c3e4acce3e703bc788f77d1111", kill_on_drop: false }`
[INFO] [stdout] ff4af14bf0eb6b128de3a5d1be96654da943c5c3e4acce3e703bc788f77d1111
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2526a337159bfa45db2e8e0faea6d2faf7d7749646b71f0e059d3b6a3681caa1
[INFO] running `Command { std: "docker" "start" "-a" "2526a337159bfa45db2e8e0faea6d2faf7d7749646b71f0e059d3b6a3681caa1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.92
[INFO] [stderr]    Compiling syn v1.0.68
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking libc-print v0.1.16
[INFO] [stderr]     Checking ctor v0.1.20 (/opt/rustwide/workdir/ctor)
[INFO] [stderr]    Compiling dlopen_derive v0.1.4
[INFO] [stderr]     Checking dlopen v0.1.8
[INFO] [stderr]     Checking tests v0.1.0 (/opt/rustwide/workdir/tests)
[INFO] [stdout] error[E0428]: the name `ctor___rust_ctor___ctor` is defined multiple times
[INFO] [stdout]   --> tests/src/dylib.rs:35:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | #[ctor]
[INFO] [stdout]    | ------- previous definition of the value `ctor___rust_ctor___ctor` here
[INFO] [stdout] ...
[INFO] [stdout] 35 | #[ctor]
[INFO] [stdout]    | ^^^^^^^ `ctor___rust_ctor___ctor` redefined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ctor___rust_ctor___ctor` must be defined only once in the value namespace of this module
[INFO] [stdout]    = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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 E0428`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tests`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2526a337159bfa45db2e8e0faea6d2faf7d7749646b71f0e059d3b6a3681caa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2526a337159bfa45db2e8e0faea6d2faf7d7749646b71f0e059d3b6a3681caa1", kill_on_drop: false }`
[INFO] [stdout] 2526a337159bfa45db2e8e0faea6d2faf7d7749646b71f0e059d3b6a3681caa1