[INFO] fetching crate json-schema-tools 0.1.0...
[INFO] checking json-schema-tools-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate json-schema-tools 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate json-schema-tools 0.1.0 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 json-schema-tools 0.1.0
[INFO] finished tweaking crates.io crate json-schema-tools 0.1.0
[INFO] tweaked toml for crates.io crate json-schema-tools 0.1.0 written to /workspace/builds/worker-0-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 21 packages
[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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 2da204a687e4b1dfdf78611fda4f4eceaca3325afed1fa2631a1ed33956fabb4
[INFO] running `Command { std: "docker" "start" "-a" "2da204a687e4b1dfdf78611fda4f4eceaca3325afed1fa2631a1ed33956fabb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2da204a687e4b1dfdf78611fda4f4eceaca3325afed1fa2631a1ed33956fabb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2da204a687e4b1dfdf78611fda4f4eceaca3325afed1fa2631a1ed33956fabb4", kill_on_drop: false }`
[INFO] [stdout] 2da204a687e4b1dfdf78611fda4f4eceaca3325afed1fa2631a1ed33956fabb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7045309531c1f942a79550cbc9cc5a7c6a48e4e33a11a6331ff672853158c86f
[INFO] running `Command { std: "docker" "start" "-a" "7045309531c1f942a79550cbc9cc5a7c6a48e4e33a11a6331ff672853158c86f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking json-schema-tools v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]    --> src/compose.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     use super::*;
[INFO] [stdout]     |         -------- the item `Value` is already imported here
[INFO] [stdout] 147 |     use serde_json::Value;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.26s
[INFO] running `Command { std: "docker" "inspect" "7045309531c1f942a79550cbc9cc5a7c6a48e4e33a11a6331ff672853158c86f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7045309531c1f942a79550cbc9cc5a7c6a48e4e33a11a6331ff672853158c86f", kill_on_drop: false }`
[INFO] [stdout] 7045309531c1f942a79550cbc9cc5a7c6a48e4e33a11a6331ff672853158c86f
[INFO] checking json-schema-tools-0.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate json-schema-tools 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate json-schema-tools 0.1.0 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 json-schema-tools 0.1.0
[INFO] finished tweaking crates.io crate json-schema-tools 0.1.0
[INFO] tweaked toml for crates.io crate json-schema-tools 0.1.0 written to /workspace/builds/worker-0-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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 07a4140bfdfd432c4c01e52747eb501ab2743bed7d14a9d82fdf9bb4128e9782
[INFO] running `Command { std: "docker" "start" "-a" "07a4140bfdfd432c4c01e52747eb501ab2743bed7d14a9d82fdf9bb4128e9782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07a4140bfdfd432c4c01e52747eb501ab2743bed7d14a9d82fdf9bb4128e9782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07a4140bfdfd432c4c01e52747eb501ab2743bed7d14a9d82fdf9bb4128e9782", kill_on_drop: false }`
[INFO] [stdout] 07a4140bfdfd432c4c01e52747eb501ab2743bed7d14a9d82fdf9bb4128e9782
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 3451eff5d9f0f4645e9941c96aa698dc96dd15c7a4392e9cfbb9283d517bec59
[INFO] running `Command { std: "docker" "start" "-a" "3451eff5d9f0f4645e9941c96aa698dc96dd15c7a4392e9cfbb9283d517bec59", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking json-schema-tools v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]    --> src/compose.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     use super::*;
[INFO] [stdout]     |         -------- the item `Value` is already imported here
[INFO] [stdout] 147 |     use serde_json::Value;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[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/schema.rs:111:24
[INFO] [stdout]     |
[INFO] [stdout] 111 | #[derive(Clone, Debug, Deserialize, Serialize)]
[INFO] [stdout]     |                        ^^^^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/schema.rs:143:24
[INFO] [stdout]     |
[INFO] [stdout] 143 | #[derive(Clone, Debug, Deserialize, Serialize)]
[INFO] [stdout]     |                        ^^^^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/schema.rs:111:24
[INFO] [stdout]     |
[INFO] [stdout] 111 | #[derive(Clone, Debug, Deserialize, Serialize)]
[INFO] [stdout]     |                        ^^^^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/schema.rs:143:24
[INFO] [stdout]     |
[INFO] [stdout] 143 | #[derive(Clone, Debug, Deserialize, Serialize)]
[INFO] [stdout]     |                        ^^^^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `json-schema-tools` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors; 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 `json-schema-tools` (lib test) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "3451eff5d9f0f4645e9941c96aa698dc96dd15c7a4392e9cfbb9283d517bec59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3451eff5d9f0f4645e9941c96aa698dc96dd15c7a4392e9cfbb9283d517bec59", kill_on_drop: false }`
[INFO] [stdout] 3451eff5d9f0f4645e9941c96aa698dc96dd15c7a4392e9cfbb9283d517bec59