[INFO] fetching crate tortank 0.20.0...
[INFO] checking tortank-0.20.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate tortank 0.20.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate tortank 0.20.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tortank 0.20.0
[INFO] finished tweaking crates.io crate tortank 0.20.0
[INFO] tweaked toml for crates.io crate tortank 0.20.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 45 packages
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.55.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d9b8e0c24cf8ddef094e8477553cb002ca6d627428d676264c36725f084cf46
[INFO] running `Command { std: "docker" "start" "-a" "4d9b8e0c24cf8ddef094e8477553cb002ca6d627428d676264c36725f084cf46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d9b8e0c24cf8ddef094e8477553cb002ca6d627428d676264c36725f084cf46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d9b8e0c24cf8ddef094e8477553cb002ca6d627428d676264c36725f084cf46", kill_on_drop: false }`
[INFO] [stdout] 4d9b8e0c24cf8ddef094e8477553cb002ca6d627428d676264c36725f084cf46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5cb91367c55e998c0ccb889b61e7efa11ec01293cde535a20d891175bc4ba9c8
[INFO] running `Command { std: "docker" "start" "-a" "5cb91367c55e998c0ccb889b61e7efa11ec01293cde535a20d891175bc4ba9c8", kill_on_drop: false }`
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking uuid v1.8.0
[INFO] [stderr]     Checking tortank v0.20.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Read` is imported redundantly
[INFO] [stdout]   --> src/turtle/turtle_doc.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io::Read;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 17 | use std::io::{prelude::*, BufReader};
[INFO] [stdout]    |               ---------- the item `Read` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Read` is imported redundantly
[INFO] [stdout]   --> src/turtle/turtle_doc.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io::Read;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 17 | use std::io::{prelude::*, BufReader};
[INFO] [stdout]    |               ---------- the item `Read` is already imported here
[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 1.59s
[INFO] running `Command { std: "docker" "inspect" "5cb91367c55e998c0ccb889b61e7efa11ec01293cde535a20d891175bc4ba9c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cb91367c55e998c0ccb889b61e7efa11ec01293cde535a20d891175bc4ba9c8", kill_on_drop: false }`
[INFO] [stdout] 5cb91367c55e998c0ccb889b61e7efa11ec01293cde535a20d891175bc4ba9c8
[INFO] checking tortank-0.20.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate tortank 0.20.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate tortank 0.20.0 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tortank 0.20.0
[INFO] finished tweaking crates.io crate tortank 0.20.0
[INFO] tweaked toml for crates.io crate tortank 0.20.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32dc29b866a05107ded828de819ce44dbe211977ff33ea0e9434f9333098ec39
[INFO] running `Command { std: "docker" "start" "-a" "32dc29b866a05107ded828de819ce44dbe211977ff33ea0e9434f9333098ec39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32dc29b866a05107ded828de819ce44dbe211977ff33ea0e9434f9333098ec39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32dc29b866a05107ded828de819ce44dbe211977ff33ea0e9434f9333098ec39", kill_on_drop: false }`
[INFO] [stdout] 32dc29b866a05107ded828de819ce44dbe211977ff33ea0e9434f9333098ec39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bfe13cc7efe135fc54816eba5a94b88f8cc02cf0c1dea74577a3ce37f3a73d5
[INFO] running `Command { std: "docker" "start" "-a" "9bfe13cc7efe135fc54816eba5a94b88f8cc02cf0c1dea74577a3ce37f3a73d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking uuid v1.8.0
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking tortank v0.20.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Read` is imported redundantly
[INFO] [stdout]   --> src/turtle/turtle_doc.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io::Read;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 17 | use std::io::{prelude::*, BufReader};
[INFO] [stdout]    |               ---------- the item `Read` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Read` is imported redundantly
[INFO] [stdout]   --> src/turtle/turtle_doc.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::io::Read;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 17 | use std::io::{prelude::*, BufReader};
[INFO] [stdout]    |               ---------- the item `Read` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]     --> src/turtle/turtle_doc.rs:1001:13
[INFO] [stdout]      |
[INFO] [stdout] 1001 | /             match n {
[INFO] [stdout] 1002 | |                 RdfJsonNodeResult::SingleNode(node) => return rjs_to_node(node),
[INFO] [stdout] 1003 | |                 RdfJsonNodeResult::ListNodes(rnr_nodes) => {
[INFO] [stdout] 1004 | |                     let mut nodes = vec![];
[INFO] [stdout] ...    |
[INFO] [stdout] 1009 | |                 }
[INFO] [stdout] 1010 | |             };
[INFO] [stdout]      | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]     --> src/turtle/turtle_doc.rs:1001:13
[INFO] [stdout]      |
[INFO] [stdout] 1001 | /             match n {
[INFO] [stdout] 1002 | |                 RdfJsonNodeResult::SingleNode(node) => return rjs_to_node(node),
[INFO] [stdout] 1003 | |                 RdfJsonNodeResult::ListNodes(rnr_nodes) => {
[INFO] [stdout] 1004 | |                     let mut nodes = vec![];
[INFO] [stdout] ...    |
[INFO] [stdout] 1009 | |                 }
[INFO] [stdout] 1010 | |             };
[INFO] [stdout]      | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tortank` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tortank` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "9bfe13cc7efe135fc54816eba5a94b88f8cc02cf0c1dea74577a3ce37f3a73d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bfe13cc7efe135fc54816eba5a94b88f8cc02cf0c1dea74577a3ce37f3a73d5", kill_on_drop: false }`
[INFO] [stdout] 9bfe13cc7efe135fc54816eba5a94b88f8cc02cf0c1dea74577a3ce37f3a73d5