[INFO] fetching crate syn-helpers 0.5.0...
[INFO] checking syn-helpers-0.5.0 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate syn-helpers 0.5.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate syn-helpers 0.5.0 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syn-helpers 0.5.0
[INFO] finished tweaking crates.io crate syn-helpers 0.5.0
[INFO] tweaked toml for crates.io crate syn-helpers 0.5.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded either_n v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04a88e73bd762c4fb8052e5d5606fff61455c699de6d2389c02dc02c7d69b9f4
[INFO] running `Command { std: "docker" "start" "-a" "04a88e73bd762c4fb8052e5d5606fff61455c699de6d2389c02dc02c7d69b9f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04a88e73bd762c4fb8052e5d5606fff61455c699de6d2389c02dc02c7d69b9f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04a88e73bd762c4fb8052e5d5606fff61455c699de6d2389c02dc02c7d69b9f4", kill_on_drop: false }`
[INFO] [stdout] 04a88e73bd762c4fb8052e5d5606fff61455c699de6d2389c02dc02c7d69b9f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b6812c538bf0330b0dba49817b133384b1362df946ae6d794bf5111eec9cb1e
[INFO] running `Command { std: "docker" "start" "-a" "1b6812c538bf0330b0dba49817b133384b1362df946ae6d794bf5111eec9cb1e", kill_on_drop: false }`
[INFO] [stderr]     Checking either_n v0.2.0
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]     Checking syn-helpers v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/lib.rs:340:86
[INFO] [stdout]     |
[INFO] [stdout] 340 |     pub fn all_attributes<'b: 'a>(&'b self) -> impl Iterator<Item = &'b Attribute> + '_ {
[INFO] [stdout]     |                           -- lifetime `'b` declared here                             ^^ this elided lifetime gets resolved as `'b`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/lib.rs:340:86
[INFO] [stdout]     |
[INFO] [stdout] 340 |     pub fn all_attributes<'b: 'a>(&'b self) -> impl Iterator<Item = &'b Attribute> + '_ {
[INFO] [stdout]     |                           -- lifetime `'b` declared here                             ^^ this elided lifetime gets resolved as `'b`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.46s
[INFO] running `Command { std: "docker" "inspect" "1b6812c538bf0330b0dba49817b133384b1362df946ae6d794bf5111eec9cb1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b6812c538bf0330b0dba49817b133384b1362df946ae6d794bf5111eec9cb1e", kill_on_drop: false }`
[INFO] [stdout] 1b6812c538bf0330b0dba49817b133384b1362df946ae6d794bf5111eec9cb1e