[INFO] fetching crate pyflow 0.2.9...
[INFO] checking pyflow-0.2.9 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate pyflow 0.2.9 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate pyflow 0.2.9 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pyflow 0.2.9
[INFO] finished tweaking crates.io crate pyflow 0.2.9
[INFO] tweaked toml for crates.io crate pyflow 0.2.9 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate pyflow 0.2.9 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a4a379baa84a58925ab3035e26bfc52708fa6952315ee8f1b444b4d36be3cd4d
[INFO] running `Command { std: "docker" "start" "-a" "a4a379baa84a58925ab3035e26bfc52708fa6952315ee8f1b444b4d36be3cd4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4a379baa84a58925ab3035e26bfc52708fa6952315ee8f1b444b4d36be3cd4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4a379baa84a58925ab3035e26bfc52708fa6952315ee8f1b444b4d36be3cd4d", kill_on_drop: false }`
[INFO] [stdout] a4a379baa84a58925ab3035e26bfc52708fa6952315ee8f1b444b4d36be3cd4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd3633ffdc1655a5460d766ebe64695452a902d462b3d526c45411db3a6a2145
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fd3633ffdc1655a5460d766ebe64695452a902d462b3d526c45411db3a6a2145", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking untrusted v0.7.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking podio v0.1.6
[INFO] [stderr]     Checking fs_extra v1.1.0
[INFO] [stderr]    Compiling ring v0.16.12
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.36
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]    Compiling lzma-sys v0.1.15
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking crossterm_utils v0.4.0
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking crossterm_utils v0.3.1
[INFO] [stderr]     Checking filetime v0.2.9
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]    Compiling rstest v0.6.4
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking crossterm_screen v0.3.2
[INFO] [stderr]     Checking crossterm_style v0.5.2
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking mio v0.6.21
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[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking zip v0.5.5
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking tokio-io v0.1.13
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[INFO] [stderr]     Checking tokio-buf v0.1.1
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[INFO] [stderr]     Checking crossbeam-deque v0.7.3
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[INFO] [stderr]    Compiling quote v1.0.7
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[INFO] [stderr]    Compiling mime_guess v2.0.3
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[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]     Checking webpki-roots v0.17.0
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[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]     Checking hyper-rustls v0.17.1
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking structopt v0.3.14
[INFO] [stderr]     Checking serde v1.0.106
[INFO] [stderr]     Checking serde_json v1.0.51
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[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]     Checking pyflow v0.2.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/files.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 34 | #[serde(untagged)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 35 | #[derive(Debug, Deserialize)]
[INFO] [stdout]    |                 ----------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/files.rs:42:3
[INFO] [stdout]    |
[INFO] [stdout] 42 | #[serde(untagged)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 43 | #[derive(Debug, Deserialize)]
[INFO] [stdout]    |                 ----------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/files.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 34 | #[serde(untagged)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 35 | #[derive(Debug, Deserialize)]
[INFO] [stdout]    |                 ----------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/files.rs:42:3
[INFO] [stdout]    |
[INFO] [stdout] 42 | #[serde(untagged)]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 43 | #[derive(Debug, Deserialize)]
[INFO] [stdout]    |                 ----------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Windows`
[INFO] [stdout]    --> src/py_versions.rs:166:5
[INFO] [stdout]     |
[INFO] [stdout] 166 |     Windows,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Mac`
[INFO] [stdout]    --> src/py_versions.rs:167:5
[INFO] [stdout]     |
[INFO] [stdout] 167 |     Mac,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Windows`
[INFO] [stdout]    --> src/py_versions.rs:166:5
[INFO] [stdout]     |
[INFO] [stdout] 166 |     Windows,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Mac`
[INFO] [stdout]    --> src/py_versions.rs:167:5
[INFO] [stdout]     |
[INFO] [stdout] 167 |     Mac,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 42s
[INFO] running `Command { std: "docker" "inspect" "fd3633ffdc1655a5460d766ebe64695452a902d462b3d526c45411db3a6a2145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd3633ffdc1655a5460d766ebe64695452a902d462b3d526c45411db3a6a2145", kill_on_drop: false }`
[INFO] [stdout] fd3633ffdc1655a5460d766ebe64695452a902d462b3d526c45411db3a6a2145