[INFO] fetching crate session_types 0.3.1...
[INFO] checking session_types-0.3.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate session_types 0.3.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate session_types 0.3.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate session_types 0.3.1
[INFO] finished tweaking crates.io crate session_types 0.3.1
[INFO] tweaked toml for crates.io crate session_types 0.3.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 72 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding cloudabi v0.0.3 (latest: v0.1.0)
[INFO] [stderr]       Adding compiletest_rs v0.3.26 (latest: v0.10.2)
[INFO] [stderr]       Adding crossbeam-channel v0.3.9 (latest: v0.5.12)
[INFO] [stderr]       Adding crossbeam-utils v0.6.6 (latest: v0.8.19)
[INFO] [stderr]       Adding dirs v2.0.2 (latest: v5.0.1)
[INFO] [stderr]       Adding dirs-sys v0.3.7 (latest: v0.4.1)
[INFO] [stderr]       Adding miow v0.3.7 (latest: v0.6.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding rand v0.5.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding redox_syscall v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding rustfix v0.4.6 (latest: v0.8.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] [stderr]       Adding term v0.6.1 (latest: v0.7.0)
[INFO] [stderr]       Adding tester v0.6.0 (latest: v0.9.1)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c04e2ce58bfd129c81dbd0032b35797801b0805cab25ac671060122c37fcaf4c
[INFO] running `Command { std: "docker" "start" "-a" "c04e2ce58bfd129c81dbd0032b35797801b0805cab25ac671060122c37fcaf4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c04e2ce58bfd129c81dbd0032b35797801b0805cab25ac671060122c37fcaf4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c04e2ce58bfd129c81dbd0032b35797801b0805cab25ac671060122c37fcaf4c", kill_on_drop: false }`
[INFO] [stdout] c04e2ce58bfd129c81dbd0032b35797801b0805cab25ac671060122c37fcaf4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d7711b39a6c3136b271a76ca955cfc46d8d22e81c38b561492a25f09d6efd8e
[INFO] running `Command { std: "docker" "start" "-a" "1d7711b39a6c3136b271a76ca955cfc46d8d22e81c38b561492a25f09d6efd8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling compiletest_rs v0.3.26
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking tester v0.6.0
[INFO] [stderr]     Checking session_types v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking rustfix v0.4.6
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.46s
[INFO] running `Command { std: "docker" "inspect" "1d7711b39a6c3136b271a76ca955cfc46d8d22e81c38b561492a25f09d6efd8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d7711b39a6c3136b271a76ca955cfc46d8d22e81c38b561492a25f09d6efd8e", kill_on_drop: false }`
[INFO] [stdout] 1d7711b39a6c3136b271a76ca955cfc46d8d22e81c38b561492a25f09d6efd8e