[INFO] fetching crate retriever 0.0.3...
[INFO] checking retriever-0.0.3 against master#9503ea19edbf01b9435e80e17d60ce1b88390116 for pr-81782
[INFO] extracting crate retriever 0.0.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate retriever 0.0.3 on toolchain 9503ea19edbf01b9435e80e17d60ce1b88390116
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate retriever 0.0.3
[INFO] finished tweaking crates.io crate retriever 0.0.3
[INFO] tweaked toml for crates.io crate retriever 0.0.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "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] 452df2a6907329b6ce042ecaebc7b1a0d67da269e3283e519e99d798dc1b9ebb
[INFO] running `Command { std: "docker" "start" "-a" "452df2a6907329b6ce042ecaebc7b1a0d67da269e3283e519e99d798dc1b9ebb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "452df2a6907329b6ce042ecaebc7b1a0d67da269e3283e519e99d798dc1b9ebb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "452df2a6907329b6ce042ecaebc7b1a0d67da269e3283e519e99d798dc1b9ebb", kill_on_drop: false }`
[INFO] [stdout] 452df2a6907329b6ce042ecaebc7b1a0d67da269e3283e519e99d798dc1b9ebb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47ab6d6cd2278510a5d0863008990687ff97d422ef832dd755ab207b57ef68a6
[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" "47ab6d6cd2278510a5d0863008990687ff97d422ef832dd755ab207b57ef68a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking plotters-backend v0.3.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking retriever v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking serde_json v1.0.63
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/bits/bitfield.rs:5:32
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub(crate) const BITS: usize = (std::mem::size_of::<usize>() * 8);
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking plotters-svg v0.3.0
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/types/entry.rs:99:20
[INFO] [stdout]     |
[INFO] [stdout] 99  |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 100 | |                 "retriever: Entry::or_panic(): {:?} doesn't exist",
[INFO] [stdout] 101 | |                 &self.id
[INFO] [stdout] 102 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking plotters v0.3.0
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking tinytemplate v1.2.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking csv v1.1.5
[INFO] [stderr]     Checking simple_logger v1.11.0
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking criterion v0.3.4
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/bits/bitfield.rs:5:32
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub(crate) const BITS: usize = (std::mem::size_of::<usize>() * 8);
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/types/entry.rs:99:20
[INFO] [stdout]     |
[INFO] [stdout] 99  |               panic!(format!(
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 100 | |                 "retriever: Entry::or_panic(): {:?} doesn't exist",
[INFO] [stdout] 101 | |                 &self.id
[INFO] [stdout] 102 | |             ))
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.01s
[INFO] running `Command { std: "docker" "inspect" "47ab6d6cd2278510a5d0863008990687ff97d422ef832dd755ab207b57ef68a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47ab6d6cd2278510a5d0863008990687ff97d422ef832dd755ab207b57ef68a6", kill_on_drop: false }`
[INFO] [stdout] 47ab6d6cd2278510a5d0863008990687ff97d422ef832dd755ab207b57ef68a6