[INFO] fetching crate precis-core 0.1.10...
[INFO] checking precis-core-0.1.10 against master#b2728d5426bab1d8c39709768c7e22b7f66dde5d for pr-135852
[INFO] extracting crate precis-core 0.1.10 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate precis-core 0.1.10 on toolchain b2728d5426bab1d8c39709768c7e22b7f66dde5d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate precis-core 0.1.10
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate precis-core 0.1.10
[INFO] tweaked toml for crates.io crate precis-core 0.1.10 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" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 167 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd78dd10b890f9e401a3d8c9381e07b0adeb6d82492213d39f0a60318a78b9de
[INFO] running `Command { std: "docker" "start" "-a" "cd78dd10b890f9e401a3d8c9381e07b0adeb6d82492213d39f0a60318a78b9de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd78dd10b890f9e401a3d8c9381e07b0adeb6d82492213d39f0a60318a78b9de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd78dd10b890f9e401a3d8c9381e07b0adeb6d82492213d39f0a60318a78b9de", kill_on_drop: false }`
[INFO] [stdout] cd78dd10b890f9e401a3d8c9381e07b0adeb6d82492213d39f0a60318a78b9de
[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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13cdcfbdba780f495eea0d6a32e6b8eaabe806e7b1ead6ac326766c2db905282
[INFO] running `Command { std: "docker" "start" "-a" "13cdcfbdba780f495eea0d6a32e6b8eaabe806e7b1ead6ac326766c2db905282", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling regex-lite v0.1.6
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]     Checking tinyvec v1.8.1
[INFO] [stderr]    Compiling ucd-parse v0.1.13
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking unicode-normalization v0.1.24
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking precis-tools v0.1.8
[INFO] [stderr]    Compiling precis-core v0.1.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/error.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         format!("{}", Error::Invalid);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/error.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 | /         format!(
[INFO] [stdout] 105 | |             "{}",
[INFO] [stdout] 106 | |             Error::BadCodepoint(CodepointInfo {
[INFO] [stdout] 107 | |                 cp: 0,
[INFO] [stdout] ...   |
[INFO] [stdout] 110 | |             })
[INFO] [stdout] 111 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/error.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |         format!("{}", Error::Unexpected(UnexpectedError::Undefined));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/error.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |         format!("{}", UnexpectedError::Undefined);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/error.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         format!("{}", UnexpectedError::ProfileRuleNotApplicable);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/error.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 | /         format!(
[INFO] [stdout] 120 | |             "{}",
[INFO] [stdout] 121 | |             UnexpectedError::MissingContextRule(CodepointInfo {
[INFO] [stdout] 122 | |                 cp: 0,
[INFO] [stdout] ...   |
[INFO] [stdout] 125 | |             })
[INFO] [stdout] 126 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]    --> src/error.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 | /         format!(
[INFO] [stdout] 128 | |             "{}",
[INFO] [stdout] 129 | |             UnexpectedError::ContextRuleNotApplicable(CodepointInfo {
[INFO] [stdout] 130 | |                 cp: 0,
[INFO] [stdout] ...   |
[INFO] [stdout] 133 | |             })
[INFO] [stdout] 134 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.08s
[INFO] running `Command { std: "docker" "inspect" "13cdcfbdba780f495eea0d6a32e6b8eaabe806e7b1ead6ac326766c2db905282", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13cdcfbdba780f495eea0d6a32e6b8eaabe806e7b1ead6ac326766c2db905282", kill_on_drop: false }`
[INFO] [stdout] 13cdcfbdba780f495eea0d6a32e6b8eaabe806e7b1ead6ac326766c2db905282