[INFO] fetching crate usvgr 0.28.5...
[INFO] checking usvgr-0.28.5 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate usvgr 0.28.5 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate usvgr 0.28.5 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate usvgr 0.28.5
[INFO] finished tweaking crates.io crate usvgr 0.28.5
[INFO] tweaked toml for crates.io crate usvgr 0.28.5 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 23 packages
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
[INFO] [stderr]       Adding data-url v0.2.0 (latest: v0.3.1)
[INFO] [stderr]       Adding imagesize v0.10.1 (latest: v0.12.0)
[INFO] [stderr]       Adding kurbo v0.8.3 (latest: v0.11.0)
[INFO] [stderr]       Adding rctree v0.5.0 (latest: v0.6.0)
[INFO] [stderr]       Adding roxmltree v0.15.1 (latest: v0.19.0)
[INFO] [stderr]       Adding siphasher v0.3.11 (latest: v1.0.1)
[INFO] [stderr]       Adding strict-num v0.1.1 (latest: v0.2.0)
[INFO] [stderr]       Adding svgrtypes v0.28.9 (latest: v0.30.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded roxmltree v0.15.1
[INFO] [stderr]   Downloaded imagesize v0.10.1
[INFO] [stderr]   Downloaded svgrtypes v0.28.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7576edf5784abc1cee357968c176f7f669c00362179f9bce456acbc66a602f2
[INFO] running `Command { std: "docker" "start" "-a" "d7576edf5784abc1cee357968c176f7f669c00362179f9bce456acbc66a602f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7576edf5784abc1cee357968c176f7f669c00362179f9bce456acbc66a602f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7576edf5784abc1cee357968c176f7f669c00362179f9bce456acbc66a602f2", kill_on_drop: false }`
[INFO] [stdout] d7576edf5784abc1cee357968c176f7f669c00362179f9bce456acbc66a602f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19f1ea33cfddca22035a54cca17544faf6ac2d8d9a292e8cbec05486c1ac6713
[INFO] running `Command { std: "docker" "start" "-a" "19f1ea33cfddca22035a54cca17544faf6ac2d8d9a292e8cbec05486c1ac6713", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking xmlparser v0.13.6
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking rctree v0.5.0
[INFO] [stderr]     Checking data-url v0.2.0
[INFO] [stderr]     Checking imagesize v0.10.1
[INFO] [stderr]     Checking kurbo v0.8.3
[INFO] [stderr]     Checking simplecss v0.2.1
[INFO] [stderr]     Checking strict-num v0.1.1
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]     Checking roxmltree v0.15.1
[INFO] [stderr]     Checking svgrtypes v0.28.9
[INFO] [stderr]     Checking usvgr v0.28.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Hash` is imported redundantly
[INFO] [stdout]   --> src/converter.rs:6:17
[INFO] [stdout]    |
[INFO] [stdout] 6  | use std::hash::{Hash, Hasher};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 | use crate::*;
[INFO] [stdout]    |     -------- the item `Hash` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `svgtree` is imported redundantly
[INFO] [stdout]   --> src/converter.rs:10:22
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::svgtree::{self, AId, EId};
[INFO] [stdout]    |                      ^^^^
[INFO] [stdout] 11 | use crate::*;
[INFO] [stdout]    |     -------- the item `svgtree` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Hash` is imported redundantly
[INFO] [stdout]   --> src/converter.rs:6:17
[INFO] [stdout]    |
[INFO] [stdout] 6  | use std::hash::{Hash, Hasher};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 | use crate::*;
[INFO] [stdout]    |     -------- the item `Hash` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `svgtree` is imported redundantly
[INFO] [stdout]   --> src/converter.rs:10:22
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::svgtree::{self, AId, EId};
[INFO] [stdout]    |                      ^^^^
[INFO] [stdout] 11 | use crate::*;
[INFO] [stdout]    |     -------- the item `svgtree` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/svgtree/names.rs:906:24
[INFO] [stdout]     |
[INFO] [stdout] 906 |         let b = entry.0.borrow();
[INFO] [stdout]     |                        ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/svgtree/names.rs:906:24
[INFO] [stdout]     |
[INFO] [stdout] 906 |         let b = entry.0.borrow();
[INFO] [stdout]     |                        ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.33s
[INFO] running `Command { std: "docker" "inspect" "19f1ea33cfddca22035a54cca17544faf6ac2d8d9a292e8cbec05486c1ac6713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19f1ea33cfddca22035a54cca17544faf6ac2d8d9a292e8cbec05486c1ac6713", kill_on_drop: false }`
[INFO] [stdout] 19f1ea33cfddca22035a54cca17544faf6ac2d8d9a292e8cbec05486c1ac6713