[INFO] fetching crate sp-variant 1.3.0...
[INFO] checking sp-variant-1.3.0 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate sp-variant 1.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate sp-variant 1.3.0 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate sp-variant 1.3.0
[INFO] finished tweaking crates.io crate sp-variant 1.3.0
[INFO] tweaked toml for crates.io crate sp-variant 1.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate sp-variant 1.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded expect-exit v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b275459d6dee093c015913099531fcbe09bd7a90dd56cb717129f99ed4663fe
[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" "5b275459d6dee093c015913099531fcbe09bd7a90dd56cb717129f99ed4663fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b275459d6dee093c015913099531fcbe09bd7a90dd56cb717129f99ed4663fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b275459d6dee093c015913099531fcbe09bd7a90dd56cb717129f99ed4663fe", kill_on_drop: false }`
[INFO] [stdout] 5b275459d6dee093c015913099531fcbe09bd7a90dd56cb717129f99ed4663fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29d76c9783ff108d9f009bdb6fc9f0880dba81c3a36d8494f90dbafbd6e33524
[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" "29d76c9783ff108d9f009bdb6fc9f0880dba81c3a36d8494f90dbafbd6e33524", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking expect-exit v0.4.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking nix v0.22.1
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking serde v1.0.130
[INFO] [stderr]     Checking sp-variant v1.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `url`
[INFO] [stdout]   --> rust/bin.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     url: &'a 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: field is never read: `url`
[INFO] [stdout]   --> rust/bin.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     url: &'a 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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.03s
[INFO] running `Command { std: "docker" "inspect" "29d76c9783ff108d9f009bdb6fc9f0880dba81c3a36d8494f90dbafbd6e33524", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29d76c9783ff108d9f009bdb6fc9f0880dba81c3a36d8494f90dbafbd6e33524", kill_on_drop: false }`
[INFO] [stdout] 29d76c9783ff108d9f009bdb6fc9f0880dba81c3a36d8494f90dbafbd6e33524