[INFO] fetching crate enum-map 2.7.3...
[INFO] checking enum-map-2.7.3 against master#020bbe46bdf613c0b8211984eaa8e5fe97d6c92d for pr-122960
[INFO] extracting crate enum-map 2.7.3 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate enum-map 2.7.3 on toolchain 020bbe46bdf613c0b8211984eaa8e5fe97d6c92d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate enum-map 2.7.3
[INFO] finished tweaking crates.io crate enum-map 2.7.3
[INFO] tweaked toml for crates.io crate enum-map 2.7.3 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" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "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" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum-map-derive v0.17.0
[INFO] [stderr]   Downloaded serde_test v1.0.176
[INFO] [stderr]   Downloaded arbitrary v1.3.2
[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" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1dd0887ec7901df82668367d41721925721913dbc07cd5cbb6c645cfeb266d6
[INFO] running `Command { std: "docker" "start" "-a" "e1dd0887ec7901df82668367d41721925721913dbc07cd5cbb6c645cfeb266d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1dd0887ec7901df82668367d41721925721913dbc07cd5cbb6c645cfeb266d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1dd0887ec7901df82668367d41721925721913dbc07cd5cbb6c645cfeb266d6", kill_on_drop: false }`
[INFO] [stdout] e1dd0887ec7901df82668367d41721925721913dbc07cd5cbb6c645cfeb266d6
[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" "+020bbe46bdf613c0b8211984eaa8e5fe97d6c92d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 108ae5a6b2142c9be1f374edd32865b7015f1529e8822323915033f60e8d4a72
[INFO] running `Command { std: "docker" "start" "-a" "108ae5a6b2142c9be1f374edd32865b7015f1529e8822323915033f60e8d4a72", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.55
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling enum-map-derive v0.17.0
[INFO] [stderr]     Checking enum-map v2.7.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Extend` is imported redundantly
[INFO] [stdout]   --> src/enum_map_impls.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 | use core::iter::{Extend, FromIterator};
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout]   --> /rustc/020bbe46bdf613c0b8211984eaa8e5fe97d6c92d/library/core/src/prelude/mod.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Extend` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/enum_map_impls.rs:11:26
[INFO] [stdout]    |
[INFO] [stdout] 11 | use core::iter::{Extend, FromIterator};
[INFO] [stdout]    |                          ^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/020bbe46bdf613c0b8211984eaa8e5fe97d6c92d/library/core/src/prelude/mod.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_test v1.0.176
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stdout] warning: the item `Extend` is imported redundantly
[INFO] [stdout]   --> src/enum_map_impls.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 | use core::iter::{Extend, FromIterator};
[INFO] [stdout]    |                  ^^^^^^
[INFO] [stdout]   --> /rustc/020bbe46bdf613c0b8211984eaa8e5fe97d6c92d/library/core/src/prelude/mod.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Extend` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]   --> src/enum_map_impls.rs:11:26
[INFO] [stdout]    |
[INFO] [stdout] 11 | use core::iter::{Extend, FromIterator};
[INFO] [stdout]    |                          ^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/020bbe46bdf613c0b8211984eaa8e5fe97d6c92d/library/core/src/prelude/mod.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `FromIterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `From` is never used
[INFO] [stdout]   --> tests/test.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 | trait From<T>: Sized {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 12.90s
[INFO] running `Command { std: "docker" "inspect" "108ae5a6b2142c9be1f374edd32865b7015f1529e8822323915033f60e8d4a72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "108ae5a6b2142c9be1f374edd32865b7015f1529e8822323915033f60e8d4a72", kill_on_drop: false }`
[INFO] [stdout] 108ae5a6b2142c9be1f374edd32865b7015f1529e8822323915033f60e8d4a72