[INFO] fetching crate scf-core 1.2.1...
[INFO] checking scf-core-1.2.1 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate scf-core 1.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate scf-core 1.2.1 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scf-core 1.2.1
[INFO] finished tweaking crates.io crate scf-core 1.2.1
[INFO] tweaked toml for crates.io crate scf-core 1.2.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lang_extension v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "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] ef97cc4959ce5b485de6428ebb8e1cecdfb3828d5c81c1bcd5707621196a1168
[INFO] running `Command { std: "docker" "start" "-a" "ef97cc4959ce5b485de6428ebb8e1cecdfb3828d5c81c1bcd5707621196a1168", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef97cc4959ce5b485de6428ebb8e1cecdfb3828d5c81c1bcd5707621196a1168", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef97cc4959ce5b485de6428ebb8e1cecdfb3828d5c81c1bcd5707621196a1168", kill_on_drop: false }`
[INFO] [stdout] ef97cc4959ce5b485de6428ebb8e1cecdfb3828d5c81c1bcd5707621196a1168
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4fdc65cc07491f153cf4acadfcccf34c7ba35777ba35c65e9433df83fc7e8c7
[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" "b4fdc65cc07491f153cf4acadfcccf34c7ba35777ba35c65e9433df83fc7e8c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking lang_extension v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking serde-value v0.5.3
[INFO] [stderr]     Checking scf-core v1.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking log4rs v0.8.3
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.92s
[INFO] running `Command { std: "docker" "inspect" "b4fdc65cc07491f153cf4acadfcccf34c7ba35777ba35c65e9433df83fc7e8c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4fdc65cc07491f153cf4acadfcccf34c7ba35777ba35c65e9433df83fc7e8c7", kill_on_drop: false }`
[INFO] [stdout] b4fdc65cc07491f153cf4acadfcccf34c7ba35777ba35c65e9433df83fc7e8c7