[INFO] fetching crate kcp 0.5.3...
[INFO] checking kcp-0.5.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate kcp 0.5.3 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate kcp 0.5.3 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 kcp 0.5.3
[INFO] finished tweaking crates.io crate kcp 0.5.3
[INFO] tweaked toml for crates.io crate kcp 0.5.3 written to /workspace/builds/worker-7-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 47 packages
[INFO] [stderr]       Adding env_logger v0.10.2 (latest: v0.11.3)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 0e67136422fd567ac0c78d6b9e96650798da14ed59230d5e0ec35855561a58d0
[INFO] running `Command { std: "docker" "start" "-a" "0e67136422fd567ac0c78d6b9e96650798da14ed59230d5e0ec35855561a58d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e67136422fd567ac0c78d6b9e96650798da14ed59230d5e0ec35855561a58d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e67136422fd567ac0c78d6b9e96650798da14ed59230d5e0ec35855561a58d0", kill_on_drop: false }`
[INFO] [stdout] 0e67136422fd567ac0c78d6b9e96650798da14ed59230d5e0ec35855561a58d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] cb9b681943027f43d9a734b1d992eb917a3d72994698788ad84c8311aa7cef8d
[INFO] running `Command { std: "docker" "start" "-a" "cb9b681943027f43d9a734b1d992eb917a3d72994698788ad84c8311aa7cef8d", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking num-conv v0.1.0
[INFO] [stderr]     Checking time-core v0.1.2
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking kcp v0.5.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.46s
[INFO] running `Command { std: "docker" "inspect" "cb9b681943027f43d9a734b1d992eb917a3d72994698788ad84c8311aa7cef8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb9b681943027f43d9a734b1d992eb917a3d72994698788ad84c8311aa7cef8d", kill_on_drop: false }`
[INFO] [stdout] cb9b681943027f43d9a734b1d992eb917a3d72994698788ad84c8311aa7cef8d
[INFO] checking kcp-0.5.3 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate kcp 0.5.3 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate kcp 0.5.3 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 kcp 0.5.3
[INFO] finished tweaking crates.io crate kcp 0.5.3
[INFO] tweaked toml for crates.io crate kcp 0.5.3 written to /workspace/builds/worker-7-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 47 packages
[INFO] [stderr]       Adding env_logger v0.10.2 (latest: v0.11.3)
[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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 86fb333b8ec6d0a44a3b85f40741b1d82e42ecce979f0df7cbdbf46b7ab8a07b
[INFO] running `Command { std: "docker" "start" "-a" "86fb333b8ec6d0a44a3b85f40741b1d82e42ecce979f0df7cbdbf46b7ab8a07b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86fb333b8ec6d0a44a3b85f40741b1d82e42ecce979f0df7cbdbf46b7ab8a07b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86fb333b8ec6d0a44a3b85f40741b1d82e42ecce979f0df7cbdbf46b7ab8a07b", kill_on_drop: false }`
[INFO] [stdout] 86fb333b8ec6d0a44a3b85f40741b1d82e42ecce979f0df7cbdbf46b7ab8a07b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 6658fa095a0c579a1b7532764af4216dacb08a6f621ef32f91a567d921851b4e
[INFO] running `Command { std: "docker" "start" "-a" "6658fa095a0c579a1b7532764af4216dacb08a6f621ef32f91a567d921851b4e", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]     Checking time-core v0.1.2
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking num-conv v0.1.0
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking kcp v0.5.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.04s
[INFO] running `Command { std: "docker" "inspect" "6658fa095a0c579a1b7532764af4216dacb08a6f621ef32f91a567d921851b4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6658fa095a0c579a1b7532764af4216dacb08a6f621ef32f91a567d921851b4e", kill_on_drop: false }`
[INFO] [stdout] 6658fa095a0c579a1b7532764af4216dacb08a6f621ef32f91a567d921851b4e