[INFO] fetching crate mikino 0.9.1...
[INFO] checking mikino-0.9.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate mikino 0.9.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate mikino 0.9.1 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 mikino 0.9.1
[INFO] finished tweaking crates.io crate mikino 0.9.1
[INFO] tweaked toml for crates.io crate mikino 0.9.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate mikino 0.9.1 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 readonly v0.2.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.38
[INFO] [stderr]   Downloaded peg-runtime v0.8.0
[INFO] [stderr]   Downloaded miniz_oxide v0.5.1
[INFO] [stderr]   Downloaded mikino_api v0.9.1
[INFO] [stderr]   Downloaded num-complex v0.4.1
[INFO] [stderr]   Downloaded num-rational v0.4.0
[INFO] [stderr]   Downloaded backtrace v0.3.65
[INFO] [stderr]   Downloaded clap v3.1.16
[INFO] [stderr]   Downloaded object v0.28.3
[INFO] [stderr]   Downloaded libc v0.2.125
[INFO] [stderr]   Downloaded peg-macros v0.8.0
[INFO] [stderr]   Downloaded peg v0.8.0
[INFO] [stderr]   Downloaded rsmt2 v0.16.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a88fed59d956098ac036c4f530c0c09715896daeac62b95f92073f61092cac6c
[INFO] running `Command { std: "docker" "start" "-a" "a88fed59d956098ac036c4f530c0c09715896daeac62b95f92073f61092cac6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a88fed59d956098ac036c4f530c0c09715896daeac62b95f92073f61092cac6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a88fed59d956098ac036c4f530c0c09715896daeac62b95f92073f61092cac6c", kill_on_drop: false }`
[INFO] [stdout] a88fed59d956098ac036c4f530c0c09715896daeac62b95f92073f61092cac6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f7674e97c9b8a351ea77a8b0cf27c50dfa4a99eb06aab67499478e081652af23
[INFO] running `Command { std: "docker" "start" "-a" "f7674e97c9b8a351ea77a8b0cf27c50dfa4a99eb06aab67499478e081652af23", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling proc-macro2 v1.0.38
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]     Checking object v0.28.3
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling peg-runtime v0.8.0
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling peg-macros v0.8.0
[INFO] [stderr]     Checking clap_lex v0.2.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]     Checking clap v3.1.16
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking peg v0.8.0
[INFO] [stderr]    Compiling readonly v0.2.1
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking rsmt2 v0.16.0
[INFO] [stderr]     Checking mikino_api v0.9.1
[INFO] [stderr]     Checking mikino v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.38s
[INFO] running `Command { std: "docker" "inspect" "f7674e97c9b8a351ea77a8b0cf27c50dfa4a99eb06aab67499478e081652af23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7674e97c9b8a351ea77a8b0cf27c50dfa4a99eb06aab67499478e081652af23", kill_on_drop: false }`
[INFO] [stdout] f7674e97c9b8a351ea77a8b0cf27c50dfa4a99eb06aab67499478e081652af23
[INFO] checking mikino-0.9.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate mikino 0.9.1 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate mikino 0.9.1 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 mikino 0.9.1
[INFO] finished tweaking crates.io crate mikino 0.9.1
[INFO] tweaked toml for crates.io crate mikino 0.9.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate mikino 0.9.1 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 75ea9d46711d05fff34bf9e6b4b5e588795495d25c1f9062534af1701cc4c062
[INFO] running `Command { std: "docker" "start" "-a" "75ea9d46711d05fff34bf9e6b4b5e588795495d25c1f9062534af1701cc4c062", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75ea9d46711d05fff34bf9e6b4b5e588795495d25c1f9062534af1701cc4c062", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75ea9d46711d05fff34bf9e6b4b5e588795495d25c1f9062534af1701cc4c062", kill_on_drop: false }`
[INFO] [stdout] 75ea9d46711d05fff34bf9e6b4b5e588795495d25c1f9062534af1701cc4c062
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f6f047123eb7f333510cbe713b791a5e33bc381e0efdbfc4a1726983b827124f
[INFO] running `Command { std: "docker" "start" "-a" "f6f047123eb7f333510cbe713b791a5e33bc381e0efdbfc4a1726983b827124f", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling proc-macro2 v1.0.38
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking object v0.28.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling peg-runtime v0.8.0
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking clap_lex v0.2.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]    Compiling peg-macros v0.8.0
[INFO] [stderr]     Checking clap v3.1.16
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking peg v0.8.0
[INFO] [stderr]    Compiling readonly v0.2.1
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking rsmt2 v0.16.0
[INFO] [stderr]     Checking mikino_api v0.9.1
[INFO] [stderr]     Checking mikino v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.99s
[INFO] running `Command { std: "docker" "inspect" "f6f047123eb7f333510cbe713b791a5e33bc381e0efdbfc4a1726983b827124f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6f047123eb7f333510cbe713b791a5e33bc381e0efdbfc4a1726983b827124f", kill_on_drop: false }`
[INFO] [stdout] f6f047123eb7f333510cbe713b791a5e33bc381e0efdbfc4a1726983b827124f