[INFO] fetching crate chapter 0.1.0...
[INFO] checking chapter-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate chapter 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate chapter 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 chapter 0.1.0
[INFO] finished tweaking crates.io crate chapter 0.1.0
[INFO] tweaked toml for crates.io crate chapter 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate chapter 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 tinystr v0.7.3
[INFO] [stderr]   Downloaded prost-derive v0.12.1
[INFO] [stderr]   Downloaded pretty_env_logger v0.5.0
[INFO] [stderr]   Downloaded prost-build v0.12.1
[INFO] [stderr]   Downloaded prost v0.12.1
[INFO] [stderr]   Downloaded prost-types v0.12.1
[INFO] [stderr]   Downloaded hashbrown v0.14.1
[INFO] [stderr]   Downloaded regex v1.9.6
[INFO] [stderr]   Downloaded aho-corasick v1.1.1
[INFO] [stderr]   Downloaded regex-automata v0.3.9
[INFO] [stderr]   Downloaded rustix v0.38.15
[INFO] [stderr]   Downloaded syn v2.0.37
[INFO] [stderr]   Downloaded csv v1.2.2
[INFO] [stderr]   Downloaded linux-raw-sys v0.4.8
[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] 74ebaa7004f1ee92373b9afc2d89f6b48f77c2b9aa4a7a90bc4022517fff22c1
[INFO] running `Command { std: "docker" "start" "-a" "74ebaa7004f1ee92373b9afc2d89f6b48f77c2b9aa4a7a90bc4022517fff22c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74ebaa7004f1ee92373b9afc2d89f6b48f77c2b9aa4a7a90bc4022517fff22c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74ebaa7004f1ee92373b9afc2d89f6b48f77c2b9aa4a7a90bc4022517fff22c1", kill_on_drop: false }`
[INFO] [stdout] 74ebaa7004f1ee92373b9afc2d89f6b48f77c2b9aa4a7a90bc4022517fff22c1
[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] 1fcc9107ecd3570495333a8ecf40bcae335e44f2d45fdda2f74d6114a15e422c
[INFO] running `Command { std: "docker" "start" "-a" "1fcc9107ecd3570495333a8ecf40bcae335e44f2d45fdda2f74d6114a15e422c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling rustix v0.38.15
[INFO] [stderr]    Compiling linux-raw-sys v0.4.8
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling bitflags v2.4.0
[INFO] [stderr]    Compiling bytes v1.5.0
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling prettyplease v0.2.15
[INFO] [stderr]    Compiling regex-syntax v0.7.5
[INFO] [stderr]    Compiling hashbrown v0.14.1
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling home v0.5.5
[INFO] [stderr]    Compiling fastrand v2.0.1
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling indexmap v2.0.2
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]    Compiling multimap v0.8.3
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling petgraph v0.6.4
[INFO] [stderr]    Compiling regex-automata v0.3.9
[INFO] [stderr]     Checking aho-corasick v1.1.1
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling tempfile v3.8.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking termcolor v1.3.0
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]    Compiling regex v1.9.6
[INFO] [stderr]     Checking env_logger v0.10.0
[INFO] [stderr]     Checking pretty_env_logger v0.5.0
[INFO] [stderr]    Compiling prost-derive v0.12.1
[INFO] [stderr]    Compiling displaydoc v0.2.4
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]     Checking tinystr v0.7.3
[INFO] [stderr]     Checking unic-langid-impl v0.9.1
[INFO] [stderr]     Checking unic-langid v0.9.1
[INFO] [stderr]     Checking intl_pluralrules v7.0.2
[INFO] [stderr]    Compiling prost v0.12.1
[INFO] [stderr]    Compiling prost-types v0.12.1
[INFO] [stderr]    Compiling prost-build v0.12.1
[INFO] [stderr]    Compiling chapter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking csv v1.2.2
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, convert::TryInto};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{collections::HashMap, convert::TryInto};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.52s
[INFO] running `Command { std: "docker" "inspect" "1fcc9107ecd3570495333a8ecf40bcae335e44f2d45fdda2f74d6114a15e422c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fcc9107ecd3570495333a8ecf40bcae335e44f2d45fdda2f74d6114a15e422c", kill_on_drop: false }`
[INFO] [stdout] 1fcc9107ecd3570495333a8ecf40bcae335e44f2d45fdda2f74d6114a15e422c