[INFO] fetching crate lambda_calc 2.2.2...
[INFO] checking lambda_calc-2.2.2 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] extracting crate lambda_calc 2.2.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate lambda_calc 2.2.2 on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lambda_calc 2.2.2
[INFO] finished tweaking crates.io crate lambda_calc 2.2.2
[INFO] tweaked toml for crates.io crate lambda_calc 2.2.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate lambda_calc 2.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", 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] 85815bf49dfd635b2257da021d0de9e3db01504dacf274c17003f3f8b8cd8740
[INFO] running `Command { std: "docker" "start" "-a" "85815bf49dfd635b2257da021d0de9e3db01504dacf274c17003f3f8b8cd8740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85815bf49dfd635b2257da021d0de9e3db01504dacf274c17003f3f8b8cd8740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85815bf49dfd635b2257da021d0de9e3db01504dacf274c17003f3f8b8cd8740", kill_on_drop: false }`
[INFO] [stdout] 85815bf49dfd635b2257da021d0de9e3db01504dacf274c17003f3f8b8cd8740
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2af8768be2cf48dab943d2634de6ceb229b4a39f99de8ebfa1301191f416cd8
[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" "b2af8768be2cf48dab943d2634de6ceb229b4a39f99de8ebfa1301191f416cd8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.4
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking dirs-sys v0.3.3
[INFO] [stderr]     Checking dirs v2.0.1
[INFO] [stderr]     Checking signal-hook v0.1.13
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling rustyline-derive v0.2.0
[INFO] [stderr]     Checking rustyline v5.0.0
[INFO] [stderr]     Checking lambda_calc v2.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.03s
[INFO] running `Command { std: "docker" "inspect" "b2af8768be2cf48dab943d2634de6ceb229b4a39f99de8ebfa1301191f416cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2af8768be2cf48dab943d2634de6ceb229b4a39f99de8ebfa1301191f416cd8", kill_on_drop: false }`
[INFO] [stdout] b2af8768be2cf48dab943d2634de6ceb229b4a39f99de8ebfa1301191f416cd8