[INFO] updating cached repository https://github.com/nelhage/ultimattt
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/nelhage/ultimattt
[INFO] [stderr]    0ed5dc7..b5700dd  master     -> master
[INFO] [stderr]  * [new branch]      zw         -> zw
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b5700dd7a3bec739f7be96bac7365507d360afa0
[INFO] checking nelhage/ultimattt against try#89c05fd3cc6404a13e1bd71450c6132a2755fa4b for pr-69741
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnelhage%2Fultimattt" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nelhage/ultimattt on toolchain 89c05fd3cc6404a13e1bd71450c6132a2755fa4b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/nelhage/ultimattt
[INFO] finished tweaking git repo https://github.com/nelhage/ultimattt
[INFO] tweaked toml for git repo https://github.com/nelhage/ultimattt written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/nelhage/ultimattt already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f77a0db99a0ff251bc2f0d7021e7e5cd15e915f47306d086c3a8cafb992f6952
[INFO] running `"docker" "start" "-a" "f77a0db99a0ff251bc2f0d7021e7e5cd15e915f47306d086c3a8cafb992f6952"`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking regex-syntax v0.6.16
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.11
[INFO] [stderr]    Compiling proc-macro-error v0.4.11
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking bstr v0.2.11
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking tinytemplate v1.0.3
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]    Compiling structopt-derive v0.4.4
[INFO] [stderr]     Checking structopt v0.3.11
[INFO] [stderr]     Checking ultimattt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.3.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.36s
[INFO] running `"docker" "inspect" "f77a0db99a0ff251bc2f0d7021e7e5cd15e915f47306d086c3a8cafb992f6952"`
[INFO] running `"docker" "rm" "-f" "f77a0db99a0ff251bc2f0d7021e7e5cd15e915f47306d086c3a8cafb992f6952"`
[INFO] [stdout] f77a0db99a0ff251bc2f0d7021e7e5cd15e915f47306d086c3a8cafb992f6952