[INFO] fetching crate float_approx_math 0.1.9...
[INFO] testing float_approx_math-0.1.9 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate float_approx_math 0.1.9 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate float_approx_math 0.1.9
[INFO] finished tweaking crates.io crate float_approx_math 0.1.9
[INFO] tweaked toml for crates.io crate float_approx_math 0.1.9 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate float_approx_math 0.1.9 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 113 packages to latest compatible versions
[INFO] [stderr]       Adding array__ops v0.1.20 (available: v1.0.3)
[INFO] [stderr]       Adding fn_zip v0.1.2 (available: v0.2.4)
[INFO] [stderr]       Adding linspace v0.1.1 (available: v0.2.4)
[INFO] [stderr]       Adding moddef v0.2.6 (available: v0.3.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d643f2f1ae1970d263fd02e6e6abfe07bb49941a0c42590a7469b30ae7d28c1
[INFO] running `Command { std: "docker" "start" "-a" "6d643f2f1ae1970d263fd02e6e6abfe07bb49941a0c42590a7469b30ae7d28c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d643f2f1ae1970d263fd02e6e6abfe07bb49941a0c42590a7469b30ae7d28c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d643f2f1ae1970d263fd02e6e6abfe07bb49941a0c42590a7469b30ae7d28c1", kill_on_drop: false }`
[INFO] [stdout] 6d643f2f1ae1970d263fd02e6e6abfe07bb49941a0c42590a7469b30ae7d28c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4d57aee5d6ce99605ee70f87f9db9b4eb3cf8f78e7b65b48f166dd426ca4e61
[INFO] running `Command { std: "docker" "start" "-a" "b4d57aee5d6ce99605ee70f87f9db9b4eb3cf8f78e7b65b48f166dd426ca4e61", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling moddef v0.2.6
[INFO] [stderr]    Compiling tupleops-generator v0.1.0
[INFO] [stderr]    Compiling moddef v0.3.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling slice_trait v0.3.7
[INFO] [stderr]    Compiling slice_trait v0.1.9
[INFO] [stderr]    Compiling array_trait v1.1.12
[INFO] [stdout] error: relaxed bounds are not permitted in trait alias bounds
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/slice_trait-0.1.9/src/prereq.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait SlicePrereq<T> = ?Sized
[INFO] [stdout]   |                            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: trait aliases are not implicitly bounded by `Sized`, so there is nothing to relax
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `const_deref`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/slice_trait-0.1.9/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(const_deref)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `slice_trait` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b4d57aee5d6ce99605ee70f87f9db9b4eb3cf8f78e7b65b48f166dd426ca4e61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4d57aee5d6ce99605ee70f87f9db9b4eb3cf8f78e7b65b48f166dd426ca4e61", kill_on_drop: false }`
[INFO] [stdout] b4d57aee5d6ce99605ee70f87f9db9b4eb3cf8f78e7b65b48f166dd426ca4e61