[INFO] fetching crate metamath-rs 0.3.8...
[INFO] checking metamath-rs-0.3.8 against master#249cb84316401daf040832cdbb8a45e0f5ab6af8 for pr-138438
[INFO] extracting crate metamath-rs 0.3.8 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate metamath-rs 0.3.8 on toolchain 249cb84316401daf040832cdbb8a45e0f5ab6af8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+249cb84316401daf040832cdbb8a45e0f5ab6af8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metamath-rs 0.3.8
[INFO] finished tweaking crates.io crate metamath-rs 0.3.8
[INFO] tweaked toml for crates.io crate metamath-rs 0.3.8 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" "+249cb84316401daf040832cdbb8a45e0f5ab6af8" "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 36 packages to latest compatible versions
[INFO] [stderr]       Adding annotate-snippets v0.9.2 (available: v0.11.5)
[INFO] [stderr]       Adding itertools v0.12.1 (available: v0.14.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+249cb84316401daf040832cdbb8a45e0f5ab6af8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dot-writer v0.1.4
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+249cb84316401daf040832cdbb8a45e0f5ab6af8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42ec4e698462d51e889dd08c11df054d8cea4492088a4e1a1b88a6d0477c92b8
[INFO] running `Command { std: "docker" "start" "-a" "42ec4e698462d51e889dd08c11df054d8cea4492088a4e1a1b88a6d0477c92b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42ec4e698462d51e889dd08c11df054d8cea4492088a4e1a1b88a6d0477c92b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42ec4e698462d51e889dd08c11df054d8cea4492088a4e1a1b88a6d0477c92b8", kill_on_drop: false }`
[INFO] [stdout] 42ec4e698462d51e889dd08c11df054d8cea4492088a4e1a1b88a6d0477c92b8
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+249cb84316401daf040832cdbb8a45e0f5ab6af8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42731d636857a6720c35663a91b9bc5040623b1005e5989d4a5dc8838203bd11
[INFO] running `Command { std: "docker" "start" "-a" "42731d636857a6720c35663a91b9bc5040623b1005e5989d4a5dc8838203bd11", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking yansi-term v0.1.2
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking unicode-width v0.1.14
[INFO] [stderr]     Checking log v0.4.26
[INFO] [stderr]     Checking tinyvec v1.9.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking typed-arena v2.0.2
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking annotate-snippets v0.9.2
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking filetime v0.2.25
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking metamath-rs v0.3.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/tree.rs:107:32
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub(crate) fn dump<'a, D>(&'a self, display: D)
[INFO] [stdout]     |                        -- lifetime `'a` declared here
[INFO] [stdout] 106 |     where
[INFO] [stdout] 107 |         D: Fn(&'a TreeItem) -> &str,
[INFO] [stdout]     |                                ^ this elided lifetime gets resolved as `'a`
[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/tree.rs:107:32
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub(crate) fn dump<'a, D>(&'a self, display: D)
[INFO] [stdout]     |                        -- lifetime `'a` declared here
[INFO] [stdout] 106 |     where
[INFO] [stdout] 107 |         D: Fn(&'a TreeItem) -> &str,
[INFO] [stdout]     |                                ^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.50s
[INFO] running `Command { std: "docker" "inspect" "42731d636857a6720c35663a91b9bc5040623b1005e5989d4a5dc8838203bd11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42731d636857a6720c35663a91b9bc5040623b1005e5989d4a5dc8838203bd11", kill_on_drop: false }`
[INFO] [stdout] 42731d636857a6720c35663a91b9bc5040623b1005e5989d4a5dc8838203bd11