[INFO] fetching crate carnix 0.10.4...
[INFO] checking carnix-0.10.4 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate carnix 0.10.4 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate carnix 0.10.4 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate carnix 0.10.4
[INFO] finished tweaking crates.io crate carnix 0.10.4
[INFO] tweaked toml for crates.io crate carnix 0.10.4 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate carnix 0.10.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 109955ce62466977d0b805cc94e576ceec9109bdd7312a31451a0dbe1741b5b6
[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" "109955ce62466977d0b805cc94e576ceec9109bdd7312a31451a0dbe1741b5b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "109955ce62466977d0b805cc94e576ceec9109bdd7312a31451a0dbe1741b5b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "109955ce62466977d0b805cc94e576ceec9109bdd7312a31451a0dbe1741b5b6", kill_on_drop: false }`
[INFO] [stdout] 109955ce62466977d0b805cc94e576ceec9109bdd7312a31451a0dbe1741b5b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] 7c1fdb555e7efa332d0cff0ea45f5491d71207bd0a6619784d01b016fa3f5d33
[INFO] running `Command { std: "docker" "start" "-a" "7c1fdb555e7efa332d0cff0ea45f5491d71207bd0a6619784d01b016fa3f5d33", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling cc v1.0.32
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]     Checking smallvec v0.6.9
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking toml v0.5.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking carnix v0.10.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/cfg.rs:154:26
[INFO] [stdout]     |
[INFO] [stdout] 154 |     if let IResult::Done(ref i, ref o) = x {
[INFO] [stdout]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/cfg.rs:165:26
[INFO] [stdout]     |
[INFO] [stdout] 165 |     if let IResult::Done(ref i, ref o) = x {
[INFO] [stdout]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/cfg.rs:154:26
[INFO] [stdout]     |
[INFO] [stdout] 154 |     if let IResult::Done(ref i, ref o) = x {
[INFO] [stdout]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/cfg.rs:165:26
[INFO] [stdout]     |
[INFO] [stdout] 165 |     if let IResult::Done(ref i, ref o) = x {
[INFO] [stdout]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 58.59s
[INFO] running `Command { std: "docker" "inspect" "7c1fdb555e7efa332d0cff0ea45f5491d71207bd0a6619784d01b016fa3f5d33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c1fdb555e7efa332d0cff0ea45f5491d71207bd0a6619784d01b016fa3f5d33", kill_on_drop: false }`
[INFO] [stdout] 7c1fdb555e7efa332d0cff0ea45f5491d71207bd0a6619784d01b016fa3f5d33