[INFO] fetching crate rstack-self 0.3.0...
[INFO] checking rstack-self-0.3.0 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate rstack-self 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rstack-self 0.3.0 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rstack-self 0.3.0
[INFO] finished tweaking crates.io crate rstack-self 0.3.0
[INFO] tweaked toml for crates.io crate rstack-self 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate rstack-self 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unwind-sys v0.1.1
[INFO] [stderr]   Downloaded foreign-types-macros v0.2.0
[INFO] [stderr]   Downloaded rstack v0.3.0
[INFO] [stderr]   Downloaded dw-sys v0.1.0
[INFO] [stderr]   Downloaded dw v0.2.0
[INFO] [stderr]   Downloaded unwind v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 85443ba9cf30e0d969b8a48c79487d5ba3f6eb0b3b1ba7a13f287482329dccff
[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" "85443ba9cf30e0d969b8a48c79487d5ba3f6eb0b3b1ba7a13f287482329dccff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85443ba9cf30e0d969b8a48c79487d5ba3f6eb0b3b1ba7a13f287482329dccff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85443ba9cf30e0d969b8a48c79487d5ba3f6eb0b3b1ba7a13f287482329dccff", kill_on_drop: false }`
[INFO] [stdout] 85443ba9cf30e0d969b8a48c79487d5ba3f6eb0b3b1ba7a13f287482329dccff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 691405803f487c879f63a0d539a8ee468ddab6b2481c25b40b85759e72463184
[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" "691405803f487c879f63a0d539a8ee468ddab6b2481c25b40b85759e72463184", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling pkg-config v0.3.16
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling unwind v0.3.0
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling bincode v1.2.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling unwind-sys v0.1.1
[INFO] [stderr]     Checking backtrace-sys v0.1.31
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking backtrace v0.3.38
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]    Compiling foreign-types-macros v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]     Checking foreign-types v0.5.0
[INFO] [stderr]     Checking rstack v0.3.0
[INFO] [stderr]     Checking serde v1.0.101
[INFO] [stderr]     Checking rstack-self v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.86s
[INFO] running `Command { std: "docker" "inspect" "691405803f487c879f63a0d539a8ee468ddab6b2481c25b40b85759e72463184", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "691405803f487c879f63a0d539a8ee468ddab6b2481c25b40b85759e72463184", kill_on_drop: false }`
[INFO] [stdout] 691405803f487c879f63a0d539a8ee468ddab6b2481c25b40b85759e72463184