[INFO] fetching crate easyio 0.2.0...
[INFO] checking easyio-0.2.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate easyio 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate easyio 0.2.0 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 easyio 0.2.0
[INFO] finished tweaking crates.io crate easyio 0.2.0
[INFO] tweaked toml for crates.io crate easyio 0.2.0 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] 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] e4005674b90a67fd98632278ec2b48c74dfafcc6e71b9c8c6f9108d773c35739
[INFO] running `Command { std: "docker" "start" "-a" "e4005674b90a67fd98632278ec2b48c74dfafcc6e71b9c8c6f9108d773c35739", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4005674b90a67fd98632278ec2b48c74dfafcc6e71b9c8c6f9108d773c35739", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4005674b90a67fd98632278ec2b48c74dfafcc6e71b9c8c6f9108d773c35739", kill_on_drop: false }`
[INFO] [stdout] e4005674b90a67fd98632278ec2b48c74dfafcc6e71b9c8c6f9108d773c35739
[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] 329dc84a86b2129b5d7caca0b34ddc6217c30cbfa0c8198135356fe474254ad6
[INFO] running `Command { std: "docker" "start" "-a" "329dc84a86b2129b5d7caca0b34ddc6217c30cbfa0c8198135356fe474254ad6", kill_on_drop: false }`
[INFO] [stderr]     Checking easyio v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "329dc84a86b2129b5d7caca0b34ddc6217c30cbfa0c8198135356fe474254ad6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "329dc84a86b2129b5d7caca0b34ddc6217c30cbfa0c8198135356fe474254ad6", kill_on_drop: false }`
[INFO] [stdout] 329dc84a86b2129b5d7caca0b34ddc6217c30cbfa0c8198135356fe474254ad6
[INFO] checking easyio-0.2.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate easyio 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate easyio 0.2.0 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 easyio 0.2.0
[INFO] finished tweaking crates.io crate easyio 0.2.0
[INFO] tweaked toml for crates.io crate easyio 0.2.0 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] 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] ceb3c8f8133e2cac40428779454202e72d41018ffa8bc8c93bc9acff2fd0368a
[INFO] running `Command { std: "docker" "start" "-a" "ceb3c8f8133e2cac40428779454202e72d41018ffa8bc8c93bc9acff2fd0368a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ceb3c8f8133e2cac40428779454202e72d41018ffa8bc8c93bc9acff2fd0368a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ceb3c8f8133e2cac40428779454202e72d41018ffa8bc8c93bc9acff2fd0368a", kill_on_drop: false }`
[INFO] [stdout] ceb3c8f8133e2cac40428779454202e72d41018ffa8bc8c93bc9acff2fd0368a
[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] d517afb987410d8d5bfa996e90f511ba30d0ba00d3ea4379fa3ff4402f314356
[INFO] running `Command { std: "docker" "start" "-a" "d517afb987410d8d5bfa996e90f511ba30d0ba00d3ea4379fa3ff4402f314356", kill_on_drop: false }`
[INFO] [stderr]     Checking easyio v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/conv/mod.rs:151:17
[INFO] [stdout]     |
[INFO] [stdout] 151 | /                 match read_full(&mut self.buffer, self.underlying_reader) {
[INFO] [stdout] 152 | |                     Ok(read_len) => {
[INFO] [stdout] 153 | |                         if read_len < self.buffer.len() {
[INFO] [stdout] 154 | |                             // we already hit eof
[INFO] [stdout] ...   |
[INFO] [stdout] 170 | |                     Err(e) => return Err(e),
[INFO] [stdout] 171 | |                 };
[INFO] [stdout]     | |_________________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `easyio` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/conv/mod.rs:151:17
[INFO] [stdout]     |
[INFO] [stdout] 151 | /                 match read_full(&mut self.buffer, self.underlying_reader) {
[INFO] [stdout] 152 | |                     Ok(read_len) => {
[INFO] [stdout] 153 | |                         if read_len < self.buffer.len() {
[INFO] [stdout] 154 | |                             // we already hit eof
[INFO] [stdout] ...   |
[INFO] [stdout] 170 | |                     Err(e) => return Err(e),
[INFO] [stdout] 171 | |                 };
[INFO] [stdout]     | |_________________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `easyio` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d517afb987410d8d5bfa996e90f511ba30d0ba00d3ea4379fa3ff4402f314356", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d517afb987410d8d5bfa996e90f511ba30d0ba00d3ea4379fa3ff4402f314356", kill_on_drop: false }`
[INFO] [stdout] d517afb987410d8d5bfa996e90f511ba30d0ba00d3ea4379fa3ff4402f314356