[INFO] fetching crate syn-merge 0.0.0...
[INFO] testing syn-merge-0.0.0 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate syn-merge 0.0.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate syn-merge 0.0.0
[INFO] finished tweaking crates.io crate syn-merge 0.0.0
[INFO] tweaked toml for crates.io crate syn-merge 0.0.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate syn-merge 0.0.0 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 599186e938382d7479117c816e15712cceae3f30ae53627023ed4524f843276c
[INFO] running `Command { std: "docker" "start" "-a" "599186e938382d7479117c816e15712cceae3f30ae53627023ed4524f843276c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "599186e938382d7479117c816e15712cceae3f30ae53627023ed4524f843276c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "599186e938382d7479117c816e15712cceae3f30ae53627023ed4524f843276c", kill_on_drop: false }`
[INFO] [stdout] 599186e938382d7479117c816e15712cceae3f30ae53627023ed4524f843276c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c363d2fee61e6b6e23f837da45f6b61efb77d95c414da5b79bd6183decfba6b
[INFO] running `Command { std: "docker" "start" "-a" "1c363d2fee61e6b6e23f837da45f6b61efb77d95c414da5b79bd6183decfba6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling similar v2.7.0
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling syn-merge v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `files`
[INFO] [stdout]   --> src/lib.rs:24:20
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn merge_files(files: &[(syn::File, Cfgs)]) -> Result<syn::File, Error> {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_files`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "1c363d2fee61e6b6e23f837da45f6b61efb77d95c414da5b79bd6183decfba6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c363d2fee61e6b6e23f837da45f6b61efb77d95c414da5b79bd6183decfba6b", kill_on_drop: false }`
[INFO] [stdout] 1c363d2fee61e6b6e23f837da45f6b61efb77d95c414da5b79bd6183decfba6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4bb098022cfc7f059f135f27deefb10e2a82c3019dcf0400ac71bc7849fbc08
[INFO] running `Command { std: "docker" "start" "-a" "c4bb098022cfc7f059f135f27deefb10e2a82c3019dcf0400ac71bc7849fbc08", kill_on_drop: false }`
[INFO] [stderr]    Compiling prettyplease v0.2.37
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling syn-merge v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `files`
[INFO] [stdout]   --> src/lib.rs:24:20
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn merge_files(files: &[(syn::File, Cfgs)]) -> Result<syn::File, Error> {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_files`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `files`
[INFO] [stdout]   --> src/lib.rs:24:20
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn merge_files(files: &[(syn::File, Cfgs)]) -> Result<syn::File, Error> {
[INFO] [stdout]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_files`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.43s
[INFO] running `Command { std: "docker" "inspect" "c4bb098022cfc7f059f135f27deefb10e2a82c3019dcf0400ac71bc7849fbc08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4bb098022cfc7f059f135f27deefb10e2a82c3019dcf0400ac71bc7849fbc08", kill_on_drop: false }`
[INFO] [stdout] c4bb098022cfc7f059f135f27deefb10e2a82c3019dcf0400ac71bc7849fbc08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 27ed440d1d8d1608977ed82fa85d12a7e06fed99cbbb1171f6c755da9f5a7358
[INFO] running `Command { std: "docker" "start" "-a" "27ed440d1d8d1608977ed82fa85d12a7e06fed99cbbb1171f6c755da9f5a7358", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `files`
[INFO] [stderr]   --> src/lib.rs:24:20
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn merge_files(files: &[(syn::File, Cfgs)]) -> Result<syn::File, Error> {
[INFO] [stderr]    |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_files`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `syn-merge` (lib) generated 1 warning
[INFO] [stderr] warning: `syn-merge` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/syn_merge-c687aeba6b9934dc)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests syn_merge
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "27ed440d1d8d1608977ed82fa85d12a7e06fed99cbbb1171f6c755da9f5a7358", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27ed440d1d8d1608977ed82fa85d12a7e06fed99cbbb1171f6c755da9f5a7358", kill_on_drop: false }`
[INFO] [stdout] 27ed440d1d8d1608977ed82fa85d12a7e06fed99cbbb1171f6c755da9f5a7358