[INFO] fetching crate tailcall 0.1.4...
[INFO] checking tailcall-0.1.4 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate tailcall 0.1.4 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate tailcall 0.1.4 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tailcall 0.1.4
[INFO] finished tweaking crates.io crate tailcall 0.1.4
[INFO] tweaked toml for crates.io crate tailcall 0.1.4 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tailcall-impl v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 49b3941930acc5b02d1ac2c5409971edeec2e99846902ce98dba8c5ae808995d
[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" "49b3941930acc5b02d1ac2c5409971edeec2e99846902ce98dba8c5ae808995d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49b3941930acc5b02d1ac2c5409971edeec2e99846902ce98dba8c5ae808995d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49b3941930acc5b02d1ac2c5409971edeec2e99846902ce98dba8c5ae808995d", kill_on_drop: false }`
[INFO] [stdout] 49b3941930acc5b02d1ac2c5409971edeec2e99846902ce98dba8c5ae808995d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] e2a8738c32faebbc3f7d2d2b8dbf31e1ede485071886f30420a0d3b35bd11828
[INFO] running `Command { std: "docker" "start" "-a" "e2a8738c32faebbc3f7d2d2b8dbf31e1ede485071886f30420a0d3b35bd11828", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]    Compiling tailcall-impl v0.1.4
[INFO] [stderr]     Checking tailcall v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.32s
[INFO] running `Command { std: "docker" "inspect" "e2a8738c32faebbc3f7d2d2b8dbf31e1ede485071886f30420a0d3b35bd11828", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2a8738c32faebbc3f7d2d2b8dbf31e1ede485071886f30420a0d3b35bd11828", kill_on_drop: false }`
[INFO] [stdout] e2a8738c32faebbc3f7d2d2b8dbf31e1ede485071886f30420a0d3b35bd11828