[INFO] cloning repository https://github.com/kujirahand/mnist_reader-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kujirahand/mnist_reader-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkujirahand%2Fmnist_reader-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkujirahand%2Fmnist_reader-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8649f99bf2f6a9df32d26bc4006792634ba6cda8
[INFO] checking kujirahand/mnist_reader-rust against try#901e6d56697c79b2e80df6a487b2318ec6f57ee3 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkujirahand%2Fmnist_reader-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kujirahand/mnist_reader-rust on toolchain 901e6d56697c79b2e80df6a487b2318ec6f57ee3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kujirahand/mnist_reader-rust
[INFO] finished tweaking git repo https://github.com/kujirahand/mnist_reader-rust
[INFO] tweaked toml for git repo https://github.com/kujirahand/mnist_reader-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kujirahand/mnist_reader-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8facc07ce7e5358eb52e429f5fc519327dd87183f66d321bb244cbc7d0ca5bb
[INFO] running `Command { std: "docker" "start" "-a" "e8facc07ce7e5358eb52e429f5fc519327dd87183f66d321bb244cbc7d0ca5bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8facc07ce7e5358eb52e429f5fc519327dd87183f66d321bb244cbc7d0ca5bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8facc07ce7e5358eb52e429f5fc519327dd87183f66d321bb244cbc7d0ca5bb", kill_on_drop: false }`
[INFO] [stdout] e8facc07ce7e5358eb52e429f5fc519327dd87183f66d321bb244cbc7d0ca5bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5456c2f76a34fa5d6e9b67a4f46121a9a1e6614c1e477ed4eab2e8ecd8e04636
[INFO] running `Command { std: "docker" "start" "-a" "5456c2f76a34fa5d6e9b67a4f46121a9a1e6614c1e477ed4eab2e8ecd8e04636", kill_on_drop: false }`
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]     Checking rustls-pki-types v1.11.0
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]     Checking bytes v1.10.1
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling rustls v0.23.26
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]     Checking miniz_oxide v0.8.8
[INFO] [stderr]     Checking crc32fast v1.4.2
[INFO] [stderr]    Compiling cc v1.2.19
[INFO] [stderr]     Checking zeroize v1.8.1
[INFO] [stderr]     Checking base64 v0.22.1
[INFO] [stderr]     Checking subtle v2.6.1
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking webpki-roots v0.26.8
[INFO] [stderr]     Checking rustls-pemfile v2.2.0
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking flate2 v1.1.1
[INFO] [stderr]     Checking http v1.3.1
[INFO] [stderr]     Checking ureq-proto v0.4.1
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]     Checking rustls-webpki v0.103.1
[INFO] [stderr]     Checking ureq v3.0.11
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ureq-3.0.11/src/util.rs:215:30
[INFO] [stdout]     |
[INFO] [stdout] 214 |             let location_header = if log_enabled!(log::Level::Trace) {
[INFO] [stdout]     |                 --------------- borrow later stored here
[INFO] [stdout] 215 |                 iter::once((&LOCATION, self.0.get(LOCATION).unwrap()))
[INFO] [stdout]     |                              ^^^^^^^^ creates a temporary value which is freed while still in use
[INFO] [stdout] 216 |             } else {
[INFO] [stdout]     |             - temporary value is freed at the end of this statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ureq-3.0.11/src/util.rs:217:30
[INFO] [stdout]     |
[INFO] [stdout] 214 |             let location_header = if log_enabled!(log::Level::Trace) {
[INFO] [stdout]     |                 --------------- borrow later stored here
[INFO] [stdout] ...
[INFO] [stdout] 217 |                 iter::once((&LOCATION, &REDACTED_LOCATION))
[INFO] [stdout]     |                              ^^^^^^^^ creates a temporary value which is freed while still in use
[INFO] [stdout] 218 |             };
[INFO] [stdout]     |             - temporary value is freed at the end of this statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0716`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ureq` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5456c2f76a34fa5d6e9b67a4f46121a9a1e6614c1e477ed4eab2e8ecd8e04636", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5456c2f76a34fa5d6e9b67a4f46121a9a1e6614c1e477ed4eab2e8ecd8e04636", kill_on_drop: false }`
[INFO] [stdout] 5456c2f76a34fa5d6e9b67a4f46121a9a1e6614c1e477ed4eab2e8ecd8e04636