[INFO] fetching crate roundqueue 0.2.7...
[INFO] checking roundqueue-0.2.7 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate roundqueue 0.2.7 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate roundqueue 0.2.7 on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate roundqueue 0.2.7
[INFO] finished tweaking crates.io crate roundqueue 0.2.7
[INFO] tweaked toml for crates.io crate roundqueue 0.2.7 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate roundqueue 0.2.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e81b4a6c28209a94b9406d8b0131dc83e92718b453ffa984caf38814f1b1ac3
[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" "7e81b4a6c28209a94b9406d8b0131dc83e92718b453ffa984caf38814f1b1ac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e81b4a6c28209a94b9406d8b0131dc83e92718b453ffa984caf38814f1b1ac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e81b4a6c28209a94b9406d8b0131dc83e92718b453ffa984caf38814f1b1ac3", kill_on_drop: false }`
[INFO] [stdout] 7e81b4a6c28209a94b9406d8b0131dc83e92718b453ffa984caf38814f1b1ac3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "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] e980f56c944ac0c2274cccb2bc4a02c956453c32044a5162a45e8d894575da7d
[INFO] running `Command { std: "docker" "start" "-a" "e980f56c944ac0c2274cccb2bc4a02c956453c32044a5162a45e8d894575da7d", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling proc-macro2 v1.0.20
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking unix-daemonize v0.1.2
[INFO] [stderr]     Checking shared_child v0.3.4
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking filetime v0.2.12
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking libflate v1.0.2
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking procfs v0.8.0
[INFO] [stderr]    Compiling git-version-macro v0.3.4
[INFO] [stderr]     Checking git-version v0.3.4
[INFO] [stderr]     Checking roundqueue v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `add_file`
[INFO] [stdout]   --> tests/lib.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn add_file(&self, p: &str, contents: &[u8]) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expect_file`
[INFO] [stdout]   --> tests/lib.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn expect_file(&self, p: &str, contents: &[u8]) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.10s
[INFO] running `Command { std: "docker" "inspect" "e980f56c944ac0c2274cccb2bc4a02c956453c32044a5162a45e8d894575da7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e980f56c944ac0c2274cccb2bc4a02c956453c32044a5162a45e8d894575da7d", kill_on_drop: false }`
[INFO] [stdout] e980f56c944ac0c2274cccb2bc4a02c956453c32044a5162a45e8d894575da7d