[INFO] fetching crate ltv 0.2.21...
[INFO] testing ltv-0.2.21 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate ltv 0.2.21 into /workspace/builds/worker-84/source
[INFO] validating manifest of crates.io crate ltv 0.2.21 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ltv 0.2.21
[INFO] finished tweaking crates.io crate ltv 0.2.21
[INFO] tweaked toml for crates.io crate ltv 0.2.21 written to /workspace/builds/worker-84/source/Cargo.toml
[INFO] crate crates.io crate ltv 0.2.21 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abe8f0fdfadb72cdc5999719862ff9925fc1bc37f4de26a44003888cbc837a25
[INFO] running `Command { std: "docker" "start" "-a" "abe8f0fdfadb72cdc5999719862ff9925fc1bc37f4de26a44003888cbc837a25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abe8f0fdfadb72cdc5999719862ff9925fc1bc37f4de26a44003888cbc837a25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abe8f0fdfadb72cdc5999719862ff9925fc1bc37f4de26a44003888cbc837a25", kill_on_drop: false }`
[INFO] [stdout] abe8f0fdfadb72cdc5999719862ff9925fc1bc37f4de26a44003888cbc837a25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a206d3a3d9f4c73ff16b7b59fe5a4fa55654fd94cffb343102952910f2ce8e13
[INFO] running `Command { std: "docker" "start" "-a" "a206d3a3d9f4c73ff16b7b59fe5a4fa55654fd94cffb343102952910f2ce8e13", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.77
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling ltv_derive_impl v0.2.11
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ltv_derive_impl-0.2.11/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_generics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![feature(adt_const_params)]` and `#![feature(generic_const_exprs)]`
[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 E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ltv_derive_impl` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a206d3a3d9f4c73ff16b7b59fe5a4fa55654fd94cffb343102952910f2ce8e13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a206d3a3d9f4c73ff16b7b59fe5a4fa55654fd94cffb343102952910f2ce8e13", kill_on_drop: false }`
[INFO] [stdout] a206d3a3d9f4c73ff16b7b59fe5a4fa55654fd94cffb343102952910f2ce8e13