[INFO] updating cached repository https://github.com/ceymard/rust-test
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1b4e5212ac9e80185cd6a1267f09b91d3a0b9e2
[INFO] checking ceymard/rust-test against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fceymard%2Frust-test" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ceymard/rust-test on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ceymard/rust-test
[INFO] finished tweaking git repo https://github.com/ceymard/rust-test
[INFO] tweaked toml for git repo https://github.com/ceymard/rust-test written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/ceymard/rust-test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8cc6079a9351861549b65cab6f703a25096ab793a8dfef9fa123e21c8294e0a1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8cc6079a9351861549b65cab6f703a25096ab793a8dfef9fa123e21c8294e0a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cc6079a9351861549b65cab6f703a25096ab793a8dfef9fa123e21c8294e0a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cc6079a9351861549b65cab6f703a25096ab793a8dfef9fa123e21c8294e0a1", kill_on_drop: false }`
[INFO] [stdout] 8cc6079a9351861549b65cab6f703a25096ab793a8dfef9fa123e21c8294e0a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7e0c475d54c1bbd3e2e21a5d383e2ef9384ef50808932293e494500f1ca6b7d3
[INFO] running `Command { std: "docker" "start" "-a" "7e0c475d54c1bbd3e2e21a5d383e2ef9384ef50808932293e494500f1ca6b7d3", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking serde v1.0.24
[INFO] [stderr]     Checking podio v0.1.5
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking backtrace-sys v0.1.16
[INFO] [stderr]     Checking miniz-sys v0.1.10
[INFO] [stderr]     Checking encoding_rs v0.7.1
[INFO] [stderr]     Checking backtrace v0.3.4
[INFO] [stderr]     Checking flate2 v0.2.20
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking msdos_time v0.1.5
[INFO] [stderr]     Checking zip v0.2.6
[INFO] [stderr]     Checking quick-xml v0.10.0
[INFO] [stderr]     Checking serde_json v1.0.8
[INFO] [stderr]     Checking calamine v0.12.1
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `cell_to_json`
[INFO] [stdout]   --> src/main.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn cell_to_json(cell: &DataType) -> std::result::Result<Value, &str> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cell_to_json`
[INFO] [stdout]   --> src/main.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn cell_to_json(cell: &DataType) -> std::result::Result<Value, &str> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.83s
[INFO] running `Command { std: "docker" "inspect" "7e0c475d54c1bbd3e2e21a5d383e2ef9384ef50808932293e494500f1ca6b7d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e0c475d54c1bbd3e2e21a5d383e2ef9384ef50808932293e494500f1ca6b7d3", kill_on_drop: false }`
[INFO] [stdout] 7e0c475d54c1bbd3e2e21a5d383e2ef9384ef50808932293e494500f1ca6b7d3