[INFO] cloning repository https://github.com/astrinxit66/rust-common
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/astrinxit66/rust-common" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fastrinxit66%2Frust-common", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fastrinxit66%2Frust-common'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88eee2e7010bb7bebeeaf9f7aa626533d987adbd
[INFO] checking astrinxit66/rust-common against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fastrinxit66%2Frust-common" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/astrinxit66/rust-common 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/astrinxit66/rust-common
[INFO] finished tweaking git repo https://github.com/astrinxit66/rust-common
[INFO] tweaked toml for git repo https://github.com/astrinxit66/rust-common written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/astrinxit66/rust-common 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 trackable_derive v0.1.3
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.2
[INFO] [stderr]   Downloaded trackable v0.2.23
[INFO] [stderr]   Downloaded cc v1.0.52
[INFO] [stderr]   Downloaded serde_json v1.0.52
[INFO] [stderr]   Downloaded rmp-serde v0.13.7
[INFO] [stderr]   Downloaded serdeconv v0.3.0
[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] 3525bfc7231e56c96d4bd28cfc0e0a49ddca5af7a58c2c7990bc9ce1bd9e446d
[INFO] running `Command { std: "docker" "start" "-a" "3525bfc7231e56c96d4bd28cfc0e0a49ddca5af7a58c2c7990bc9ce1bd9e446d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3525bfc7231e56c96d4bd28cfc0e0a49ddca5af7a58c2c7990bc9ce1bd9e446d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3525bfc7231e56c96d4bd28cfc0e0a49ddca5af7a58c2c7990bc9ce1bd9e446d", kill_on_drop: false }`
[INFO] [stdout] 3525bfc7231e56c96d4bd28cfc0e0a49ddca5af7a58c2c7990bc9ce1bd9e446d
[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] 7ead365642f2a245b1397f20ef0301cbe670ae328d72f5e78959c26f8e6fd608
[INFO] running `Command { std: "docker" "start" "-a" "7ead365642f2a245b1397f20ef0301cbe670ae328d72f5e78959c26f8e6fd608", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]     Checking pin-project-lite v0.1.5
[INFO] [stderr]     Checking futures-core v0.3.4
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-timer v2.0.2
[INFO] [stderr]     Checking bytes v0.5.4
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling ring v0.16.13
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking async-task v1.3.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking rmp v0.8.9
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling trackable_derive v0.1.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki v0.21.2
[INFO] [stderr]     Checking trackable v0.2.23
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]     Checking serde_json v1.0.52
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking kv-log-macro v1.0.4
[INFO] [stderr]     Checking rustls v0.17.0
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking serdeconv v0.3.0
[INFO] [stderr]     Checking async-std v1.5.0
[INFO] [stderr]     Checking astrinxit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/logit.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     self, info,
[INFO] [stdout]   |     ^^^^ the item `log` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/logit.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     self, info,
[INFO] [stdout]   |     ^^^^ the item `log` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.76s
[INFO] running `Command { std: "docker" "inspect" "7ead365642f2a245b1397f20ef0301cbe670ae328d72f5e78959c26f8e6fd608", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ead365642f2a245b1397f20ef0301cbe670ae328d72f5e78959c26f8e6fd608", kill_on_drop: false }`
[INFO] [stdout] 7ead365642f2a245b1397f20ef0301cbe670ae328d72f5e78959c26f8e6fd608
[INFO] checking astrinxit66/rust-common against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fastrinxit66%2Frust-common" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/astrinxit66/rust-common 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/astrinxit66/rust-common
[INFO] finished tweaking git repo https://github.com/astrinxit66/rust-common
[INFO] tweaked toml for git repo https://github.com/astrinxit66/rust-common written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/astrinxit66/rust-common 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-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] 2218cf001e0f5ed1e846aff01c0e2536d7c15934697f67eb013dffa22233e787
[INFO] running `Command { std: "docker" "start" "-a" "2218cf001e0f5ed1e846aff01c0e2536d7c15934697f67eb013dffa22233e787", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2218cf001e0f5ed1e846aff01c0e2536d7c15934697f67eb013dffa22233e787", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2218cf001e0f5ed1e846aff01c0e2536d7c15934697f67eb013dffa22233e787", kill_on_drop: false }`
[INFO] [stdout] 2218cf001e0f5ed1e846aff01c0e2536d7c15934697f67eb013dffa22233e787
[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] 2487ecb51b6f63d12e6e4e7e6388ed91fecff28602c36a296908a0f67b14ec49
[INFO] running `Command { std: "docker" "start" "-a" "2487ecb51b6f63d12e6e4e7e6388ed91fecff28602c36a296908a0f67b14ec49", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking pin-project-lite v0.1.5
[INFO] [stderr]     Checking futures-timer v2.0.2
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-core v0.3.4
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]     Checking bytes v0.5.4
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking async-task v1.3.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]    Compiling ring v0.16.13
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking rmp v0.8.9
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki v0.21.2
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling trackable_derive v0.1.3
[INFO] [stderr]     Checking trackable v0.2.23
[INFO] [stderr]     Checking serde_json v1.0.52
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking kv-log-macro v1.0.4
[INFO] [stderr]     Checking rustls v0.17.0
[INFO] [stderr]     Checking serdeconv v0.3.0
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking async-std v1.5.0
[INFO] [stderr]     Checking astrinxit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/logit.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     self, info,
[INFO] [stdout]   |     ^^^^ the item `log` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log` is imported redundantly
[INFO] [stdout]  --> src/logit.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     self, info,
[INFO] [stdout]   |     ^^^^ the item `log` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.20s
[INFO] running `Command { std: "docker" "inspect" "2487ecb51b6f63d12e6e4e7e6388ed91fecff28602c36a296908a0f67b14ec49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2487ecb51b6f63d12e6e4e7e6388ed91fecff28602c36a296908a0f67b14ec49", kill_on_drop: false }`
[INFO] [stdout] 2487ecb51b6f63d12e6e4e7e6388ed91fecff28602c36a296908a0f67b14ec49