[INFO] fetching crate mtg-deck-stats 0.1.0...
[INFO] checking mtg-deck-stats-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate mtg-deck-stats 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate mtg-deck-stats 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 mtg-deck-stats 0.1.0
[INFO] finished tweaking crates.io crate mtg-deck-stats 0.1.0
[INFO] tweaked toml for crates.io crate mtg-deck-stats 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate mtg-deck-stats 0.1.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded snafu-derive v0.5.0
[INFO] [stderr]   Downloaded snafu v0.5.0
[INFO] [stderr]   Downloaded cc v1.0.42
[INFO] [stderr]   Downloaded prettytable-rs v0.8.0
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75dbefd82706981e12c7e1e3bfe856fe25a54e5b314570fb13094e3ef42ef50f
[INFO] running `Command { std: "docker" "start" "-a" "75dbefd82706981e12c7e1e3bfe856fe25a54e5b314570fb13094e3ef42ef50f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75dbefd82706981e12c7e1e3bfe856fe25a54e5b314570fb13094e3ef42ef50f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75dbefd82706981e12c7e1e3bfe856fe25a54e5b314570fb13094e3ef42ef50f", kill_on_drop: false }`
[INFO] [stdout] 75dbefd82706981e12c7e1e3bfe856fe25a54e5b314570fb13094e3ef42ef50f
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40939991d94c30905d1f3c1dab84d4c2dbbf0027b69c1f3f58805a0e9c44ed6d
[INFO] running `Command { std: "docker" "start" "-a" "40939991d94c30905d1f3c1dab84d4c2dbbf0027b69c1f3f58805a0e9c44ed6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling cc v1.0.42
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking backtrace v0.3.37
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]    Compiling structopt-derive v0.3.1
[INFO] [stderr]    Compiling snafu-derive v0.5.0
[INFO] [stderr]     Checking structopt v0.3.1
[INFO] [stderr]     Checking snafu v0.5.0
[INFO] [stderr]     Checking mtg-deck-stats v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.53s
[INFO] running `Command { std: "docker" "inspect" "40939991d94c30905d1f3c1dab84d4c2dbbf0027b69c1f3f58805a0e9c44ed6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40939991d94c30905d1f3c1dab84d4c2dbbf0027b69c1f3f58805a0e9c44ed6d", kill_on_drop: false }`
[INFO] [stdout] 40939991d94c30905d1f3c1dab84d4c2dbbf0027b69c1f3f58805a0e9c44ed6d
[INFO] checking mtg-deck-stats-0.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate mtg-deck-stats 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate mtg-deck-stats 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 mtg-deck-stats 0.1.0
[INFO] finished tweaking crates.io crate mtg-deck-stats 0.1.0
[INFO] tweaked toml for crates.io crate mtg-deck-stats 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate mtg-deck-stats 0.1.0 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3ef044308b8f93df68f58cec8ee1fb340c0dfcbb18d30b3545df0177778907c
[INFO] running `Command { std: "docker" "start" "-a" "c3ef044308b8f93df68f58cec8ee1fb340c0dfcbb18d30b3545df0177778907c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3ef044308b8f93df68f58cec8ee1fb340c0dfcbb18d30b3545df0177778907c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3ef044308b8f93df68f58cec8ee1fb340c0dfcbb18d30b3545df0177778907c", kill_on_drop: false }`
[INFO] [stdout] c3ef044308b8f93df68f58cec8ee1fb340c0dfcbb18d30b3545df0177778907c
[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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61ea65675213c2a01f7abb03011ea09c6e8abb5926479e1a1a1ddcf84ba1c0d8
[INFO] running `Command { std: "docker" "start" "-a" "61ea65675213c2a01f7abb03011ea09c6e8abb5926479e1a1a1ddcf84ba1c0d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling cc v1.0.42
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking backtrace v0.3.37
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]    Compiling structopt-derive v0.3.1
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/structopt-derive-0.3.1/src/attrs.rs:389:13
[INFO] [stdout]     |
[INFO] [stdout] 389 | /             span_error!(
[INFO] [stdout] 390 | |                 res.parser.span(),
[INFO] [stdout] 391 | |                 "parse attribute is only allowed on fields"
[INFO] [stdout] 392 | |             );
[INFO] [stdout]     | |_____________^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `span_error` (in Nightly builds, run with -Z macro-backtrace for more info)
[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 `structopt-derive` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "61ea65675213c2a01f7abb03011ea09c6e8abb5926479e1a1a1ddcf84ba1c0d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61ea65675213c2a01f7abb03011ea09c6e8abb5926479e1a1a1ddcf84ba1c0d8", kill_on_drop: false }`
[INFO] [stdout] 61ea65675213c2a01f7abb03011ea09c6e8abb5926479e1a1a1ddcf84ba1c0d8