[INFO] fetching crate tracers-build 0.1.0...
[INFO] checking tracers-build-0.1.0 against try#1c5262aa6c045a581fb974488793f09ed51fc498 for pr-78376
[INFO] extracting crate tracers-build 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tracers-build 0.1.0 on toolchain 1c5262aa6c045a581fb974488793f09ed51fc498
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tracers-build 0.1.0
[INFO] finished tweaking crates.io crate tracers-build 0.1.0
[INFO] tweaked toml for crates.io crate tracers-build 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "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" "+1c5262aa6c045a581fb974488793f09ed51fc498" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd366fb2b004d3a05f7b1db77857bcbfef3b3f17a2a8edf6e40063f19eae009a
[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" "fd366fb2b004d3a05f7b1db77857bcbfef3b3f17a2a8edf6e40063f19eae009a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd366fb2b004d3a05f7b1db77857bcbfef3b3f17a2a8edf6e40063f19eae009a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd366fb2b004d3a05f7b1db77857bcbfef3b3f17a2a8edf6e40063f19eae009a", kill_on_drop: false }`
[INFO] [stdout] fd366fb2b004d3a05f7b1db77857bcbfef3b3f17a2a8edf6e40063f19eae009a
[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" "+1c5262aa6c045a581fb974488793f09ed51fc498" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df48133ebee62c0eb54ebd66de3ca50b41284e1ab94f967162b4af35c0ccc18f
[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" "df48133ebee62c0eb54ebd66de3ca50b41284e1ab94f967162b4af35c0ccc18f", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling askama_escape v0.2.0
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking cc v1.0.61
[INFO] [stderr]     Checking pkg-config v0.3.19
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking twox-hash v1.6.0
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking heck v0.3.1
[INFO] [stderr]     Checking darling_core v0.10.2
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling strum_macros v0.16.0
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling tracers-core v0.1.0
[INFO] [stderr]     Checking darling v0.10.2
[INFO] [stderr]     Checking serde v1.0.117
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking serde_str v0.1.0
[INFO] [stderr]     Checking askama_shared v0.8.0
[INFO] [stderr]     Checking proc-macro-crate v0.1.5
[INFO] [stderr]     Checking cargo_metadata v0.9.1
[INFO] [stderr]    Compiling askama_derive v0.8.0
[INFO] [stderr]     Checking askama v0.8.0
[INFO] [stderr]     Checking tracers-codegen v0.1.0
[INFO] [stderr]     Checking tracers-build v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 34s
[INFO] running `Command { std: "docker" "inspect" "df48133ebee62c0eb54ebd66de3ca50b41284e1ab94f967162b4af35c0ccc18f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df48133ebee62c0eb54ebd66de3ca50b41284e1ab94f967162b4af35c0ccc18f", kill_on_drop: false }`
[INFO] [stdout] df48133ebee62c0eb54ebd66de3ca50b41284e1ab94f967162b4af35c0ccc18f