[INFO] fetching crate codegen2 0.1.4...
[INFO] checking codegen2-0.1.4 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate codegen2 0.1.4 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate codegen2 0.1.4 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate codegen2 0.1.4
[INFO] finished tweaking crates.io crate codegen2 0.1.4
[INFO] tweaked toml for crates.io crate codegen2 0.1.4 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d017e882fc52302f2d92ac3c81243c71b7618267f553c7461d8dd10274199a61
[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" "d017e882fc52302f2d92ac3c81243c71b7618267f553c7461d8dd10274199a61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d017e882fc52302f2d92ac3c81243c71b7618267f553c7461d8dd10274199a61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d017e882fc52302f2d92ac3c81243c71b7618267f553c7461d8dd10274199a61", kill_on_drop: false }`
[INFO] [stdout] d017e882fc52302f2d92ac3c81243c71b7618267f553c7461d8dd10274199a61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2a4db4ac4f6c5f7c6b3c0ad62864b63ecc9823895f1c9e7aa1f744353c75fd6
[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" "c2a4db4ac4f6c5f7c6b3c0ad62864b63ecc9823895f1c9e7aa1f744353c75fd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking codegen2 v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hidden lifetime parameters in types are deprecated
[INFO] [stdout]    --> src/type_def.rs:110:35
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn fmt_allow(&self, fmt: &mut Formatter) -> fmt::Result {
[INFO] [stdout]     |                                   ^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:3:9
[INFO] [stdout]     |
[INFO] [stdout] 3   | #![warn(rust_2018_idioms)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(elided_lifetimes_in_paths)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hidden lifetime parameters in types are deprecated
[INFO] [stdout]    --> src/type_def.rs:110:35
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn fmt_allow(&self, fmt: &mut Formatter) -> fmt::Result {
[INFO] [stdout]     |                                   ^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:3:9
[INFO] [stdout]     |
[INFO] [stdout] 3   | #![warn(rust_2018_idioms)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(elided_lifetimes_in_paths)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `line`
[INFO] [stdout]  --> src/import.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     line: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `docs`
[INFO] [stdout]   --> src/module.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     docs: Option<Docs>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `docs`
[INFO] [stdout]   --> src/scope.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     docs: Option<Docs>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `macros`
[INFO] [stdout]   --> src/trait.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     macros: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `line`
[INFO] [stdout]  --> src/import.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     line: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `docs`
[INFO] [stdout]   --> src/module.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     docs: Option<Docs>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `docs`
[INFO] [stdout]   --> src/scope.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     docs: Option<Docs>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `macros`
[INFO] [stdout]   --> src/trait.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     macros: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `Command { std: "docker" "inspect" "c2a4db4ac4f6c5f7c6b3c0ad62864b63ecc9823895f1c9e7aa1f744353c75fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2a4db4ac4f6c5f7c6b3c0ad62864b63ecc9823895f1c9e7aa1f744353c75fd6", kill_on_drop: false }`
[INFO] [stdout] c2a4db4ac4f6c5f7c6b3c0ad62864b63ecc9823895f1c9e7aa1f744353c75fd6