[INFO] fetching crate trans-schema-derive 0.3.0-alpha.1...
[INFO] checking trans-schema-derive-0.3.0-alpha.1 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate trans-schema-derive 0.3.0-alpha.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate trans-schema-derive 0.3.0-alpha.1 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate trans-schema-derive 0.3.0-alpha.1
[INFO] finished tweaking crates.io crate trans-schema-derive 0.3.0-alpha.1
[INFO] tweaked toml for crates.io crate trans-schema-derive 0.3.0-alpha.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 016917aeda9e675da6c03702f6f0c6d0860b16f7d495905a9961ecf2f158e4f3
[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" "016917aeda9e675da6c03702f6f0c6d0860b16f7d495905a9961ecf2f158e4f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "016917aeda9e675da6c03702f6f0c6d0860b16f7d495905a9961ecf2f158e4f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "016917aeda9e675da6c03702f6f0c6d0860b16f7d495905a9961ecf2f158e4f3", kill_on_drop: false }`
[INFO] [stdout] 016917aeda9e675da6c03702f6f0c6d0860b16f7d495905a9961ecf2f158e4f3
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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] 2f9ec7a80e995b467753670413b3507f5810505ae0cc8b14ab502f4be5011d7b
[INFO] running `Command { std: "docker" "start" "-a" "2f9ec7a80e995b467753670413b3507f5810505ae0cc8b14ab502f4be5011d7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking proc-macro2 v1.0.27
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking trans-schema-derive v0.3.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:170:21
[INFO] [stdout]     |
[INFO] [stdout] 170 |                 let mut generics = ast.generics.clone();
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:170:21
[INFO] [stdout]     |
[INFO] [stdout] 170 |                 let mut generics = ast.generics.clone();
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.81s
[INFO] running `Command { std: "docker" "inspect" "2f9ec7a80e995b467753670413b3507f5810505ae0cc8b14ab502f4be5011d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f9ec7a80e995b467753670413b3507f5810505ae0cc8b14ab502f4be5011d7b", kill_on_drop: false }`
[INFO] [stdout] 2f9ec7a80e995b467753670413b3507f5810505ae0cc8b14ab502f4be5011d7b