[INFO] cloning repository https://github.com/mikegedelman/rust-no-std-ice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mikegedelman/rust-no-std-ice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikegedelman%2Frust-no-std-ice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikegedelman%2Frust-no-std-ice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 45285be930b4329d4f0254149ca9f1b96c1a6ae8
[INFO] checking mikegedelman/rust-no-std-ice against master#0a8629bff642c3c3b84bb644c0099194f063b627 for pr-86231
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikegedelman%2Frust-no-std-ice" "/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/mikegedelman/rust-no-std-ice on toolchain 0a8629bff642c3c3b84bb644c0099194f063b627
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/mikegedelman/rust-no-std-ice
[INFO] finished tweaking git repo https://github.com/mikegedelman/rust-no-std-ice
[INFO] tweaked toml for git repo https://github.com/mikegedelman/rust-no-std-ice written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mikegedelman/rust-no-std-ice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--no-deps" "--format-version=1", 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] 7ec470ed7954f25db3f5dc73f555ae93cd1fbeef5ab795fda41f74e577b65daa
[INFO] running `Command { std: "docker" "start" "-a" "7ec470ed7954f25db3f5dc73f555ae93cd1fbeef5ab795fda41f74e577b65daa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ec470ed7954f25db3f5dc73f555ae93cd1fbeef5ab795fda41f74e577b65daa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ec470ed7954f25db3f5dc73f555ae93cd1fbeef5ab795fda41f74e577b65daa", kill_on_drop: false }`
[INFO] [stdout] 7ec470ed7954f25db3f5dc73f555ae93cd1fbeef5ab795fda41f74e577b65daa
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4366eb9f6df76f1a0981f4941321eff6a360a4923751bcf9e2093623b92bc64d
[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" "4366eb9f6df76f1a0981f4941321eff6a360a4923751bcf9e2093623b92bc64d", kill_on_drop: false }`
[INFO] [stderr]     Checking no_std_lib v0.0.1 (/opt/rustwide/workdir/no_std_lib)
[INFO] [stderr]     Checking app v0.0.1 (/opt/rustwide/workdir/app)
[INFO] [stdout] error[E0152]: found duplicate lang item `start`
[INFO] [stdout]  --> no_std_lib/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn lang_start() {}
[INFO] [stdout]   | ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]   = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/0a8629bff642c3c3b84bb644c0099194f063b627/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-363511a59ca6fedb.rlib
[INFO] [stdout]   = note: second definition in the local crate (`no_std_lib`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]  --> no_std_lib/src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn panic(_: &::core::panic::PanicInfo) -> ! {loop {}}
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]   = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/0a8629bff642c3c3b84bb644c0099194f063b627/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-363511a59ca6fedb.rlib
[INFO] [stdout]   = note: second definition in the local crate (`no_std_lib`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `no_std_lib`
[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] [stdout] error: duplicate lang item in crate `std` (which `test` depends on): `panic_impl`.
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `no_std_lib` (which `app` depends on)
[INFO] [stdout]   = note: first definition in `no_std_lib` loaded from /opt/rustwide/target/debug/deps/libno_std_lib-4dc2f41aa869f63a.rmeta
[INFO] [stdout]   = note: second definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/0a8629bff642c3c3b84bb644c0099194f063b627/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-363511a59ca6fedb.rlib
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: duplicate lang item in crate `std` (which `test` depends on): `start`.
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `no_std_lib` (which `app` depends on)
[INFO] [stdout]   = note: first definition in `no_std_lib` loaded from /opt/rustwide/target/debug/deps/libno_std_lib-4dc2f41aa869f63a.rmeta
[INFO] [stdout]   = note: second definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/0a8629bff642c3c3b84bb644c0099194f063b627/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-363511a59ca6fedb.rlib
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4366eb9f6df76f1a0981f4941321eff6a360a4923751bcf9e2093623b92bc64d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4366eb9f6df76f1a0981f4941321eff6a360a4923751bcf9e2093623b92bc64d", kill_on_drop: false }`
[INFO] [stdout] 4366eb9f6df76f1a0981f4941321eff6a360a4923751bcf9e2093623b92bc64d