[INFO] fetching crate selector 1.2.0...
[INFO] checking selector-1.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate selector 1.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate selector 1.2.0 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 selector 1.2.0
[INFO] finished tweaking crates.io crate selector 1.2.0
[INFO] tweaked toml for crates.io crate selector 1.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate selector 1.2.0 already has a lockfile, it will not be regenerated
[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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasmer_enumset_derive v0.5.0
[INFO] [stderr]   Downloaded ncurses v5.101.0
[INFO] [stderr]   Downloaded wasmer_enumset v1.0.1
[INFO] [stderr]   Downloaded array-macro v1.0.5
[INFO] [stderr]   Downloaded enum-map-derive v0.4.6
[INFO] [stderr]   Downloaded enum-map v0.6.4
[INFO] [stderr]   Downloaded cursive v0.16.3
[INFO] [stderr]   Downloaded anyhow v1.0.44
[INFO] [stderr]   Downloaded ahash v0.6.3
[INFO] [stderr]   Downloaded xi-unicode v0.3.0
[INFO] [stderr]   Downloaded cursive_core v0.2.2
[INFO] [stderr]   Downloaded syn v1.0.76
[INFO] [stderr]   Downloaded libc v0.2.102
[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] ba368af99a0b587a437b85349002e27efdb75d31af653993235072b555bac189
[INFO] running `Command { std: "docker" "start" "-a" "ba368af99a0b587a437b85349002e27efdb75d31af653993235072b555bac189", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba368af99a0b587a437b85349002e27efdb75d31af653993235072b555bac189", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba368af99a0b587a437b85349002e27efdb75d31af653993235072b555bac189", kill_on_drop: false }`
[INFO] [stdout] ba368af99a0b587a437b85349002e27efdb75d31af653993235072b555bac189
[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] 46f83b747320c996b72fbcb5f5d0ae57bbc8f37d929ed8b8d818d82dd9120f6d
[INFO] running `Command { std: "docker" "start" "-a" "46f83b747320c996b72fbcb5f5d0ae57bbc8f37d929ed8b8d818d82dd9120f6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling ahash v0.6.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking array-macro v1.0.5
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking xi-unicode v0.3.0
[INFO] [stderr]    Compiling ncurses v5.101.0
[INFO] [stderr]    Compiling anyhow v1.0.44
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling enum-map-derive v0.4.6
[INFO] [stderr]     Checking enum-map v0.6.4
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling wasmer_enumset_derive v0.5.0
[INFO] [stderr]     Checking wasmer_enumset v1.0.1
[INFO] [stderr]     Checking cursive_core v0.2.2
[INFO] [stderr]     Checking cursive v0.16.3
[INFO] [stderr]     Checking selector v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.34s
[INFO] running `Command { std: "docker" "inspect" "46f83b747320c996b72fbcb5f5d0ae57bbc8f37d929ed8b8d818d82dd9120f6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46f83b747320c996b72fbcb5f5d0ae57bbc8f37d929ed8b8d818d82dd9120f6d", kill_on_drop: false }`
[INFO] [stdout] 46f83b747320c996b72fbcb5f5d0ae57bbc8f37d929ed8b8d818d82dd9120f6d
[INFO] checking selector-1.2.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate selector 1.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate selector 1.2.0 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 selector 1.2.0
[INFO] finished tweaking crates.io crate selector 1.2.0
[INFO] tweaked toml for crates.io crate selector 1.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate selector 1.2.0 already has a lockfile, it will not be regenerated
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] 1b955aa9779a05d1b4c7ef3ea8e0fcb5de4483ac0c000194edf2bff3b00f9f7e
[INFO] running `Command { std: "docker" "start" "-a" "1b955aa9779a05d1b4c7ef3ea8e0fcb5de4483ac0c000194edf2bff3b00f9f7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b955aa9779a05d1b4c7ef3ea8e0fcb5de4483ac0c000194edf2bff3b00f9f7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b955aa9779a05d1b4c7ef3ea8e0fcb5de4483ac0c000194edf2bff3b00f9f7e", kill_on_drop: false }`
[INFO] [stdout] 1b955aa9779a05d1b4c7ef3ea8e0fcb5de4483ac0c000194edf2bff3b00f9f7e
[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] 2af4f03c970dd70880d0eb8f55ca91cc9672b54a36b9dd288d79502fecf9fc0b
[INFO] running `Command { std: "docker" "start" "-a" "2af4f03c970dd70880d0eb8f55ca91cc9672b54a36b9dd288d79502fecf9fc0b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling ahash v0.6.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking array-macro v1.0.5
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]    Compiling anyhow v1.0.44
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking xi-unicode v0.3.0
[INFO] [stderr]    Compiling ncurses v5.101.0
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling enum-map-derive v0.4.6
[INFO] [stderr]     Checking enum-map v0.6.4
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling wasmer_enumset_derive v0.5.0
[INFO] [stderr]     Checking wasmer_enumset v1.0.1
[INFO] [stderr]     Checking cursive_core v0.2.2
[INFO] [stderr]     Checking cursive v0.16.3
[INFO] [stderr]     Checking selector v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.98s
[INFO] running `Command { std: "docker" "inspect" "2af4f03c970dd70880d0eb8f55ca91cc9672b54a36b9dd288d79502fecf9fc0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2af4f03c970dd70880d0eb8f55ca91cc9672b54a36b9dd288d79502fecf9fc0b", kill_on_drop: false }`
[INFO] [stdout] 2af4f03c970dd70880d0eb8f55ca91cc9672b54a36b9dd288d79502fecf9fc0b