[INFO] fetching crate isow 0.3.0...
[INFO] checking isow-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate isow 0.3.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate isow 0.3.0 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 isow 0.3.0
[INFO] finished tweaking crates.io crate isow 0.3.0
[INFO] tweaked toml for crates.io crate isow 0.3.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate isow 0.3.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded adler32 v1.0.4
[INFO] [stderr]   Downloaded self_update v0.11.1
[INFO] [stderr]   Downloaded flate2 v1.0.14
[INFO] [stderr]   Downloaded podio v0.1.6
[INFO] [stderr]   Downloaded num_cpus v1.12.0
[INFO] [stderr]   Downloaded tokio-tls v0.3.0
[INFO] [stderr]   Downloaded rbtag v0.3.0
[INFO] [stderr]   Downloaded rbtag_derive v0.3.0
[INFO] [stderr]   Downloaded futures-channel v0.3.4
[INFO] [stderr]   Downloaded anyhow v1.0.27
[INFO] [stderr]   Downloaded hyper-old-types v0.11.0
[INFO] [stderr]   Downloaded tokio v0.2.13
[INFO] [stderr]   Downloaded bzip2-sys v0.1.8+1.0.8
[INFO] [stderr]   Downloaded web-sys v0.3.37
[INFO] [stderr]   Downloaded indicatif v0.13.0
[INFO] [stderr]   Downloaded isocal v0.1.1
[INFO] [stderr]   Downloaded encoding_rs v0.8.22
[INFO] [stderr]   Downloaded quick-xml v0.17.2
[INFO] [stderr]   Downloaded futures-util v0.3.4
[INFO] [stderr]   Downloaded futures-core v0.3.4
[INFO] [stderr]   Downloaded futures-sink v0.3.4
[INFO] [stderr]   Downloaded h2 v0.2.3
[INFO] [stderr]   Downloaded pin-project v0.4.8
[INFO] [stderr]   Downloaded hyper v0.13.4
[INFO] [stderr]   Downloaded openssl v0.10.28
[INFO] [stderr]   Downloaded openssl-sys v0.9.54
[INFO] [stderr]   Downloaded schannel v0.1.18
[INFO] [stderr]   Downloaded security-framework v0.4.1
[INFO] [stderr]   Downloaded native-tls v0.2.4
[INFO] [stderr]   Downloaded mio v0.6.21
[INFO] [stderr]   Downloaded js-sys v0.3.37
[INFO] [stderr]   Downloaded bumpalo v3.2.1
[INFO] [stderr]   Downloaded syn v1.0.17
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.60
[INFO] [stderr]   Downloaded reqwest v0.10.4
[INFO] [stderr]   Downloaded serde v1.0.105
[INFO] [stderr]   Downloaded tar v0.4.26
[INFO] [stderr]   Downloaded futures-task v0.3.4
[INFO] [stderr]   Downloaded indexmap v1.3.2
[INFO] [stderr]   Downloaded console v0.10.0
[INFO] [stderr]   Downloaded futures-io v0.3.4
[INFO] [stderr]   Downloaded pin-utils v0.1.0-alpha.4
[INFO] [stderr]   Downloaded pin-project-internal v0.4.8
[INFO] [stderr]   Downloaded hyper-tls v0.4.1
[INFO] [stderr]   Downloaded version_check v0.9.1
[INFO] [stderr]   Downloaded serde_urlencoded v0.6.1
[INFO] [stderr]   Downloaded openssl-probe v0.1.2
[INFO] [stderr]   Downloaded pin-project-lite v0.1.4
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.60
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.60
[INFO] [stderr]   Downloaded filetime v0.2.8
[INFO] [stderr]   Downloaded tower-service v0.3.0
[INFO] [stderr]   Downloaded vcpkg v0.2.8
[INFO] [stderr]   Downloaded security-framework-sys v0.4.1
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.10
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.60
[INFO] [stderr]   Downloaded winreg v0.6.2
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.60
[INFO] [stderr]   Downloaded crc32fast v1.2.0
[INFO] [stderr]   Downloaded miniz_oxide v0.3.6
[INFO] [stderr]   Downloaded zip v0.5.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 3bd01a6b5f9f0241a1214d1286691805e4fe27da4996c692f10eff1093ead888
[INFO] running `Command { std: "docker" "start" "-a" "3bd01a6b5f9f0241a1214d1286691805e4fe27da4996c692f10eff1093ead888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3bd01a6b5f9f0241a1214d1286691805e4fe27da4996c692f10eff1093ead888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bd01a6b5f9f0241a1214d1286691805e4fe27da4996c692f10eff1093ead888", kill_on_drop: false }`
[INFO] [stdout] 3bd01a6b5f9f0241a1214d1286691805e4fe27da4996c692f10eff1093ead888
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 29992eb11e66ac3c50a947f002257661309bdfd5e68a93699bf2a336a5951739
[INFO] running `Command { std: "docker" "start" "-a" "29992eb11e66ac3c50a947f002257661309bdfd5e68a93699bf2a336a5951739", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling anyhow v1.0.27
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking isocal v0.1.1
[INFO] [stderr]    Compiling rbtag_derive v0.3.0
[INFO] [stderr]     Checking rbtag v0.3.0
[INFO] [stderr]     Checking isow v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] fatal: not a git repository (or any parent up to mount point /opt/rustwide)
[INFO] [stderr] Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
[INFO] [stderr] fatal: not a git repository (or any parent up to mount point /opt/rustwide)
[INFO] [stderr] Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.16s
[INFO] running `Command { std: "docker" "inspect" "29992eb11e66ac3c50a947f002257661309bdfd5e68a93699bf2a336a5951739", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29992eb11e66ac3c50a947f002257661309bdfd5e68a93699bf2a336a5951739", kill_on_drop: false }`
[INFO] [stdout] 29992eb11e66ac3c50a947f002257661309bdfd5e68a93699bf2a336a5951739
[INFO] checking isow-0.3.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate isow 0.3.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate isow 0.3.0 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 isow 0.3.0
[INFO] finished tweaking crates.io crate isow 0.3.0
[INFO] tweaked toml for crates.io crate isow 0.3.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate isow 0.3.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 79d861576edcc4fc0e702f715c6afc9ee4af0e4b53d6799586768901fad67baa
[INFO] running `Command { std: "docker" "start" "-a" "79d861576edcc4fc0e702f715c6afc9ee4af0e4b53d6799586768901fad67baa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79d861576edcc4fc0e702f715c6afc9ee4af0e4b53d6799586768901fad67baa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79d861576edcc4fc0e702f715c6afc9ee4af0e4b53d6799586768901fad67baa", kill_on_drop: false }`
[INFO] [stdout] 79d861576edcc4fc0e702f715c6afc9ee4af0e4b53d6799586768901fad67baa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b9aeb574da1c196f895d31ebdb1b04ae63916fe727f0e02d204edb7fc49ac876
[INFO] running `Command { std: "docker" "start" "-a" "b9aeb574da1c196f895d31ebdb1b04ae63916fe727f0e02d204edb7fc49ac876", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling anyhow v1.0.27
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking isocal v0.1.1
[INFO] [stderr]    Compiling rbtag_derive v0.3.0
[INFO] [stderr]     Checking rbtag v0.3.0
[INFO] [stderr]     Checking isow v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] fatal: not a git repository (or any parent up to mount point /opt/rustwide)
[INFO] [stderr] Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
[INFO] [stderr] fatal: not a git repository (or any parent up to mount point /opt/rustwide)
[INFO] [stderr] Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.68s
[INFO] running `Command { std: "docker" "inspect" "b9aeb574da1c196f895d31ebdb1b04ae63916fe727f0e02d204edb7fc49ac876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9aeb574da1c196f895d31ebdb1b04ae63916fe727f0e02d204edb7fc49ac876", kill_on_drop: false }`
[INFO] [stdout] b9aeb574da1c196f895d31ebdb1b04ae63916fe727f0e02d204edb7fc49ac876