[INFO] cloning repository https://github.com/davidbarsky/stuff
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidbarsky/stuff" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidbarsky%2Fstuff", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidbarsky%2Fstuff'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 89d2dfa95d1e91f6ee3996731c0c9eb2f306a902
[INFO] checking davidbarsky/stuff against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidbarsky%2Fstuff" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidbarsky/stuff 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 git repo https://github.com/davidbarsky/stuff
[INFO] finished tweaking git repo https://github.com/davidbarsky/stuff
[INFO] tweaked toml for git repo https://github.com/davidbarsky/stuff written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/davidbarsky/stuff 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 git repository `https://github.com/hyperium/hyper`
[INFO] [stderr]     Updating git repository `https://github.com/hyperium/h2`
[INFO] [stderr]     Updating git repository `https://github.com/hyperium/http-body`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-serde v0.1.2
[INFO] [stderr]   Downloaded tracing-log v0.1.1
[INFO] [stderr]   Downloaded matchers v0.0.1
[INFO] [stderr]   Downloaded sharded-slab v0.1.0
[INFO] [stderr]   Downloaded tracing-attributes v0.1.11
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.15
[INFO] [stderr]   Downloaded tower-load-shed v0.3.0
[INFO] [stderr]   Downloaded tokio-macros v0.3.1
[INFO] [stderr]   Downloaded tower-discover v0.3.0
[INFO] [stderr]   Downloaded tower-buffer v0.3.0
[INFO] [stderr]   Downloaded miow v0.3.6
[INFO] [stderr]   Downloaded tower-limit v0.3.1
[INFO] [stderr]   Downloaded anyhow v1.0.35
[INFO] [stderr]   Downloaded http v0.2.1
[INFO] [stderr]   Downloaded mio v0.7.6
[INFO] [stderr]   Downloaded tokio v0.3.5
[INFO] [stderr]   Downloaded tokio v0.2.23
[INFO] [stderr]   Downloaded indexmap v1.6.0
[INFO] [stderr]   Downloaded tokio-util v0.5.1
[INFO] [stderr]   Downloaded bytes v0.6.0
[INFO] [stderr]   Downloaded socket2 v0.3.17
[INFO] [stderr]   Downloaded tower-retry v0.3.0
[INFO] [stderr]   Downloaded tower-load v0.3.0
[INFO] [stderr]   Downloaded tower-layer v0.3.0
[INFO] [stderr]   Downloaded tower-timeout v0.3.0
[INFO] [stderr]   Downloaded tower-service v0.3.0
[INFO] [stderr]   Downloaded tower-util v0.3.1
[INFO] [stderr]   Downloaded tower v0.3.1
[INFO] [stderr]   Downloaded generator v0.6.23
[INFO] [stderr]   Downloaded smallvec v1.5.1
[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] 08a211418b457e785466e96bfbb29e2dd3264d70a502dfb998af4705ba120931
[INFO] running `Command { std: "docker" "start" "-a" "08a211418b457e785466e96bfbb29e2dd3264d70a502dfb998af4705ba120931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08a211418b457e785466e96bfbb29e2dd3264d70a502dfb998af4705ba120931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08a211418b457e785466e96bfbb29e2dd3264d70a502dfb998af4705ba120931", kill_on_drop: false }`
[INFO] [stdout] 08a211418b457e785466e96bfbb29e2dd3264d70a502dfb998af4705ba120931
[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] bbd140e6fc15b249bfc15103fb4643dfda56929aa1d27ec620b8f1ab92963673
[INFO] running `Command { std: "docker" "start" "-a" "bbd140e6fc15b249bfc15103fb4643dfda56929aa1d27ec620b8f1ab92963673", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking smallvec v1.5.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking tower-layer v0.3.0
[INFO] [stderr]    Compiling tokio v0.3.5
[INFO] [stderr]     Checking tokio v0.2.23
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking bytes v0.6.0
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]     Checking mio v0.7.6
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling anyhow v1.0.35
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking parking_lot_core v0.8.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking socket2 v0.3.17
[INFO] [stderr]     Checking sharded-slab v0.1.0
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking http-body v0.4.0 (https://github.com/hyperium/http-body#5e434739)
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling tokio-macros v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking tower-retry v0.3.0
[INFO] [stderr]     Checking tower-buffer v0.3.0
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking tower-timeout v0.3.0
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking tower-limit v0.3.1
[INFO] [stderr]     Checking serde v1.0.118
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking tower v0.3.1
[INFO] [stderr]     Checking tokio-util v0.5.1
[INFO] [stderr]     Checking h2 v0.3.0 (https://github.com/hyperium/h2#dc3079ab)
[INFO] [stderr]     Checking tracing-serde v0.1.2
[INFO] [stderr]     Checking serde_json v1.0.60
[INFO] [stderr]     Checking tracing-subscriber v0.2.15
[INFO] [stderr]     Checking hyper v0.14.0-dev (https://github.com/hyperium/hyper#b4e24332)
[INFO] [stderr]     Checking stuff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.57s
[INFO] running `Command { std: "docker" "inspect" "bbd140e6fc15b249bfc15103fb4643dfda56929aa1d27ec620b8f1ab92963673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbd140e6fc15b249bfc15103fb4643dfda56929aa1d27ec620b8f1ab92963673", kill_on_drop: false }`
[INFO] [stdout] bbd140e6fc15b249bfc15103fb4643dfda56929aa1d27ec620b8f1ab92963673
[INFO] checking davidbarsky/stuff against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidbarsky%2Fstuff" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidbarsky/stuff 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 git repo https://github.com/davidbarsky/stuff
[INFO] finished tweaking git repo https://github.com/davidbarsky/stuff
[INFO] tweaked toml for git repo https://github.com/davidbarsky/stuff written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/davidbarsky/stuff 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] 58928b9c8b3eb1c2d99b604849426bae883088d31f97141856c8d0e405efc734
[INFO] running `Command { std: "docker" "start" "-a" "58928b9c8b3eb1c2d99b604849426bae883088d31f97141856c8d0e405efc734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58928b9c8b3eb1c2d99b604849426bae883088d31f97141856c8d0e405efc734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58928b9c8b3eb1c2d99b604849426bae883088d31f97141856c8d0e405efc734", kill_on_drop: false }`
[INFO] [stdout] 58928b9c8b3eb1c2d99b604849426bae883088d31f97141856c8d0e405efc734
[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] 9034fd369fe68f483634fda5cd66aa6590106ed347753f6aa7792a16f9eb6e94
[INFO] running `Command { std: "docker" "start" "-a" "9034fd369fe68f483634fda5cd66aa6590106ed347753f6aa7792a16f9eb6e94", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking smallvec v1.5.1
[INFO] [stderr]     Checking tower-layer v0.3.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking tokio v0.2.23
[INFO] [stderr]    Compiling tokio v0.3.5
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking bytes v0.6.0
[INFO] [stderr]     Checking mio v0.7.6
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling anyhow v1.0.35
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking parking_lot_core v0.8.1
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking socket2 v0.3.17
[INFO] [stderr]     Checking sharded-slab v0.1.0
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking http-body v0.4.0 (https://github.com/hyperium/http-body#5e434739)
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling tokio-macros v0.3.1
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking tower-buffer v0.3.0
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking tower-retry v0.3.0
[INFO] [stderr]     Checking tower-timeout v0.3.0
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking tower-limit v0.3.1
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking serde v1.0.118
[INFO] [stderr]     Checking tower v0.3.1
[INFO] [stderr]     Checking tokio-util v0.5.1
[INFO] [stderr]     Checking h2 v0.3.0 (https://github.com/hyperium/h2#dc3079ab)
[INFO] [stderr]     Checking tracing-serde v0.1.2
[INFO] [stderr]     Checking serde_json v1.0.60
[INFO] [stderr]     Checking hyper v0.14.0-dev (https://github.com/hyperium/hyper#b4e24332)
[INFO] [stderr]     Checking tracing-subscriber v0.2.15
[INFO] [stderr]     Checking stuff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.71s
[INFO] running `Command { std: "docker" "inspect" "9034fd369fe68f483634fda5cd66aa6590106ed347753f6aa7792a16f9eb6e94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9034fd369fe68f483634fda5cd66aa6590106ed347753f6aa7792a16f9eb6e94", kill_on_drop: false }`
[INFO] [stdout] 9034fd369fe68f483634fda5cd66aa6590106ed347753f6aa7792a16f9eb6e94