[INFO] fetching crate edcert-letter 2.0.0...
[INFO] checking edcert-letter-2.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate edcert-letter 2.0.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate edcert-letter 2.0.0 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 edcert-letter 2.0.0
[INFO] finished tweaking crates.io crate edcert-letter 2.0.0
[INFO] tweaked toml for crates.io crate edcert-letter 2.0.0 written to /workspace/builds/worker-4-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]     Updating crates.io index
[INFO] [stderr]      Locking 21 packages
[INFO] [stderr]       Adding chrono v0.2.25 (latest: v0.4.37)
[INFO] [stderr]       Adding libc v0.1.12 (latest: v0.2.153)
[INFO] [stderr]       Adding libsodium-sys v0.0.12 (latest: v0.2.7)
[INFO] [stderr]       Adding num v0.1.42 (latest: v0.4.1)
[INFO] [stderr]       Adding secrets v0.11.1 (latest: v1.2.0)
[INFO] [stderr]       Adding serde v0.7.15 (latest: v1.0.197)
[INFO] [stderr]       Adding sodiumoxide v0.0.12 (latest: v0.2.7)
[INFO] [stderr]       Adding time v0.1.45 (latest: v0.3.34)
[INFO] [stderr]       Adding wasi v0.10.0+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]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v0.7.15
[INFO] [stderr]   Downloaded libsodium-sys v0.0.12
[INFO] [stderr]   Downloaded secrets v0.11.1
[INFO] [stderr]   Downloaded libc v0.1.12
[INFO] [stderr]   Downloaded chrono v0.2.25
[INFO] [stderr]   Downloaded sodiumoxide v0.0.12
[INFO] [stderr]   Downloaded edcert v9.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] fc95f500f396f977d0bf841cee28d9f1d89414f1a377c0bf2253df99c8a79878
[INFO] running `Command { std: "docker" "start" "-a" "fc95f500f396f977d0bf841cee28d9f1d89414f1a377c0bf2253df99c8a79878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc95f500f396f977d0bf841cee28d9f1d89414f1a377c0bf2253df99c8a79878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc95f500f396f977d0bf841cee28d9f1d89414f1a377c0bf2253df99c8a79878", kill_on_drop: false }`
[INFO] [stdout] fc95f500f396f977d0bf841cee28d9f1d89414f1a377c0bf2253df99c8a79878
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a1a2de4d781e5acdb7d01111994fb22f4916fa141db0750b082167c1337ef58d
[INFO] running `Command { std: "docker" "start" "-a" "a1a2de4d781e5acdb7d01111994fb22f4916fa141db0750b082167c1337ef58d", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]     Checking serde v0.7.15
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking secrets v0.11.1
[INFO] [stderr]    Compiling libsodium-sys v0.0.12
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking sodiumoxide v0.0.12
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking edcert v9.0.1
[INFO] [stderr]     Checking edcert-letter v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.06s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: edcert v9.0.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "a1a2de4d781e5acdb7d01111994fb22f4916fa141db0750b082167c1337ef58d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1a2de4d781e5acdb7d01111994fb22f4916fa141db0750b082167c1337ef58d", kill_on_drop: false }`
[INFO] [stdout] a1a2de4d781e5acdb7d01111994fb22f4916fa141db0750b082167c1337ef58d
[INFO] checking edcert-letter-2.0.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate edcert-letter 2.0.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate edcert-letter 2.0.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate edcert-letter 2.0.0
[INFO] finished tweaking crates.io crate edcert-letter 2.0.0
[INFO] tweaked toml for crates.io crate edcert-letter 2.0.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 21 packages
[INFO] [stderr]       Adding chrono v0.2.25 (latest: v0.4.37)
[INFO] [stderr]       Adding libc v0.1.12 (latest: v0.2.153)
[INFO] [stderr]       Adding libsodium-sys v0.0.12 (latest: v0.2.7)
[INFO] [stderr]       Adding num v0.1.42 (latest: v0.4.1)
[INFO] [stderr]       Adding secrets v0.11.1 (latest: v1.2.0)
[INFO] [stderr]       Adding serde v0.7.15 (latest: v1.0.197)
[INFO] [stderr]       Adding sodiumoxide v0.0.12 (latest: v0.2.7)
[INFO] [stderr]       Adding time v0.1.45 (latest: v0.3.34)
[INFO] [stderr]       Adding wasi v0.10.0+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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6d21efe5839a12616d5d9e797d75f0b40b48b65045c30325db2e6f8867b89af
[INFO] running `Command { std: "docker" "start" "-a" "b6d21efe5839a12616d5d9e797d75f0b40b48b65045c30325db2e6f8867b89af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6d21efe5839a12616d5d9e797d75f0b40b48b65045c30325db2e6f8867b89af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6d21efe5839a12616d5d9e797d75f0b40b48b65045c30325db2e6f8867b89af", kill_on_drop: false }`
[INFO] [stdout] b6d21efe5839a12616d5d9e797d75f0b40b48b65045c30325db2e6f8867b89af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d72609395e989a557aacf8784e289683efdd726515602a62f5ac9b282c51eb68
[INFO] running `Command { std: "docker" "start" "-a" "d72609395e989a557aacf8784e289683efdd726515602a62f5ac9b282c51eb68", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]     Checking serde v0.7.15
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking secrets v0.11.1
[INFO] [stderr]    Compiling libsodium-sys v0.0.12
[INFO] [stderr]     Checking sodiumoxide v0.0.12
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking edcert v9.0.1
[INFO] [stderr]     Checking edcert-letter v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.92s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: edcert v9.0.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "d72609395e989a557aacf8784e289683efdd726515602a62f5ac9b282c51eb68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d72609395e989a557aacf8784e289683efdd726515602a62f5ac9b282c51eb68", kill_on_drop: false }`
[INFO] [stdout] d72609395e989a557aacf8784e289683efdd726515602a62f5ac9b282c51eb68