[INFO] fetching crate serde_json 1.0.61...
[INFO] checking serde_json-1.0.61 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate serde_json 1.0.61 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate serde_json 1.0.61 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_json 1.0.61
[INFO] finished tweaking crates.io crate serde_json 1.0.61
[INFO] tweaked toml for crates.io crate serde_json 1.0.61 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9aea2c23dd49ae8a30f5bfff9827cb2a689fa8fc6be7a7d2880612aab032d703
[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" "9aea2c23dd49ae8a30f5bfff9827cb2a689fa8fc6be7a7d2880612aab032d703", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9aea2c23dd49ae8a30f5bfff9827cb2a689fa8fc6be7a7d2880612aab032d703", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aea2c23dd49ae8a30f5bfff9827cb2a689fa8fc6be7a7d2880612aab032d703", kill_on_drop: false }`
[INFO] [stdout] 9aea2c23dd49ae8a30f5bfff9827cb2a689fa8fc6be7a7d2880612aab032d703
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f21838143b75642d72671a0755c9841f331831e5977fdff40fb5fbde2f3e45b
[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" "3f21838143b75642d72671a0755c9841f331831e5977fdff40fb5fbde2f3e45b", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling serde_json v1.0.61 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling psm v0.1.12
[INFO] [stderr]    Compiling stacker v0.1.13
[INFO] [stderr]    Compiling automod v1.0.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking serde_stacker v0.1.4
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking trybuild v1.0.38
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.05s
[INFO] running `Command { std: "docker" "inspect" "3f21838143b75642d72671a0755c9841f331831e5977fdff40fb5fbde2f3e45b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f21838143b75642d72671a0755c9841f331831e5977fdff40fb5fbde2f3e45b", kill_on_drop: false }`
[INFO] [stdout] 3f21838143b75642d72671a0755c9841f331831e5977fdff40fb5fbde2f3e45b