[INFO] fetching crate dge-gen 0.2.0...
[INFO] checking dge-gen-0.2.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate dge-gen 0.2.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate dge-gen 0.2.0 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 dge-gen 0.2.0
[INFO] finished tweaking crates.io crate dge-gen 0.2.0
[INFO] tweaked toml for crates.io crate dge-gen 0.2.0 written to /workspace/builds/worker-12/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 2adfa21cf853e26d2862717cc638ac19ac1e6f91b3547b654d9447d48aeebfe6
[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" "2adfa21cf853e26d2862717cc638ac19ac1e6f91b3547b654d9447d48aeebfe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2adfa21cf853e26d2862717cc638ac19ac1e6f91b3547b654d9447d48aeebfe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2adfa21cf853e26d2862717cc638ac19ac1e6f91b3547b654d9447d48aeebfe6", kill_on_drop: false }`
[INFO] [stdout] 2adfa21cf853e26d2862717cc638ac19ac1e6f91b3547b654d9447d48aeebfe6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 7f60f98686647971984bdead3f945368f18bdc34d89ce8f3cd2a5ea205f3e3e7
[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" "7f60f98686647971984bdead3f945368f18bdc34d89ce8f3cd2a5ea205f3e3e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling humansize v1.1.1
[INFO] [stderr]    Compiling askama_escape v0.2.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking fixedbitset v0.4.0
[INFO] [stderr]     Checking heck v0.3.3
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]     Checking petgraph v0.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]    Compiling askama_shared v0.8.0
[INFO] [stderr]    Compiling askama_derive v0.8.0
[INFO] [stderr]     Checking askama v0.8.0
[INFO] [stderr]     Checking dge-gen v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/generate/graph.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |     let f = std::fs::OpenOptions::new()
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node_index`
[INFO] [stdout]    --> src/generate/graph.rs:330:10
[INFO] [stdout]     |
[INFO] [stdout] 330 |         |node_index, node| node.name(),
[INFO] [stdout]     |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `edge_index`
[INFO] [stdout]    --> src/generate/graph.rs:331:10
[INFO] [stdout]     |
[INFO] [stdout] 331 |         |edge_index, edge| format!("{}\n{}", edge.queue, edge.msg_type.trim_start_matches(&msg_prefix)),
[INFO] [stdout]     |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_edge_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/generate/graph.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |     let f = std::fs::OpenOptions::new()
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node_index`
[INFO] [stdout]    --> src/generate/graph.rs:330:10
[INFO] [stdout]     |
[INFO] [stdout] 330 |         |node_index, node| node.name(),
[INFO] [stdout]     |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_node_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `edge_index`
[INFO] [stdout]    --> src/generate/graph.rs:331:10
[INFO] [stdout]     |
[INFO] [stdout] 331 |         |edge_index, edge| format!("{}\n{}", edge.queue, edge.msg_type.trim_start_matches(&msg_prefix)),
[INFO] [stdout]     |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_edge_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/generate/graph.rs:336:9
[INFO] [stdout]     |
[INFO] [stdout] 336 |     let mut all_queues: Vec<_> = graph
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/generate/graph.rs:336:9
[INFO] [stdout]     |
[INFO] [stdout] 336 |     let mut all_queues: Vec<_> = graph
[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: function is never used: `gen_string`
[INFO] [stdout]  --> src/generate/rust.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) fn gen_string(s: String) -> String {
[INFO] [stdout]   |               ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_opt_string`
[INFO] [stdout]  --> src/generate/rust.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub(crate) fn gen_opt_string(s: Option<String>) -> String {
[INFO] [stdout]   |               ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_vec_string`
[INFO] [stdout]   --> src/generate/rust.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub(crate) fn gen_vec_string(ss: Vec<String>) -> String {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `type_error`
[INFO] [stdout]   --> src/graph.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub(crate) type_error: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_string`
[INFO] [stdout]  --> src/generate/rust.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) fn gen_string(s: String) -> String {
[INFO] [stdout]   |               ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_opt_string`
[INFO] [stdout]  --> src/generate/rust.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub(crate) fn gen_opt_string(s: Option<String>) -> String {
[INFO] [stdout]   |               ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_vec_string`
[INFO] [stdout]   --> src/generate/rust.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub(crate) fn gen_vec_string(ss: Vec<String>) -> String {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `type_error`
[INFO] [stdout]   --> src/graph.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub(crate) type_error: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `Command { std: "docker" "inspect" "7f60f98686647971984bdead3f945368f18bdc34d89ce8f3cd2a5ea205f3e3e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f60f98686647971984bdead3f945368f18bdc34d89ce8f3cd2a5ea205f3e3e7", kill_on_drop: false }`
[INFO] [stdout] 7f60f98686647971984bdead3f945368f18bdc34d89ce8f3cd2a5ea205f3e3e7