[INFO] updating cached repository https://github.com/kivikakk/ebooks
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9d552aaf922723ff8beba707bce3aaa89525c404
[INFO] checking kivikakk/ebooks against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkivikakk%2Febooks" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kivikakk/ebooks on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/kivikakk/ebooks
[INFO] finished tweaking git repo https://github.com/kivikakk/ebooks
[INFO] tweaked toml for git repo https://github.com/kivikakk/ebooks written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/kivikakk/ebooks already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 753dbef4a30ca2bed83e111b64c9c9e3cc354af0a2a634073bab54ad538083d1
[INFO] running `"docker" "start" "-a" "753dbef4a30ca2bed83e111b64c9c9e3cc354af0a2a634073bab54ad538083d1"`
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking htmlescape v0.3.1 (https://github.com/kivikakk/rust-htmlescape.git#4572c97c)
[INFO] [stderr]     Checking bincode v0.9.2
[INFO] [stderr]    Compiling serde_derive_internals v0.18.0
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking csv-core v0.1.3
[INFO] [stderr]     Checking csv v1.0.0-beta.5
[INFO] [stderr]     Checking dotenv v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.24
[INFO] [stderr]     Checking ebooks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parse.rs:68:55
[INFO] [stderr]    |
[INFO] [stderr] 68 | pub fn parse(input: &str, n: usize) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:49:49
[INFO] [stderr]    |
[INFO] [stderr] 49 | pub fn generate(n: usize) -> Result<String, Box<Error>> {
[INFO] [stderr]    |                                                 ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:56:70
[INFO] [stderr]    |
[INFO] [stderr] 56 | fn generate_with_map(n: usize, map: &NgramMap) -> Result<String, Box<Error>> {
[INFO] [stderr]    |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/tweet.rs:8:42
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn tweet(n: usize) -> Result<(), Box<Error>> {
[INFO] [stderr]   |                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tweet.rs:36:86
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn pin(core: &mut Core, handle: &Handle, con_token: &KeyPair) -> Result<KeyPair, Box<Error>> {
[INFO] [stderr]    |                                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parse.rs:68:55
[INFO] [stderr]    |
[INFO] [stderr] 68 | pub fn parse(input: &str, n: usize) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:49:49
[INFO] [stderr]    |
[INFO] [stderr] 49 | pub fn generate(n: usize) -> Result<String, Box<Error>> {
[INFO] [stderr]    |                                                 ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/generate.rs:56:70
[INFO] [stderr]    |
[INFO] [stderr] 56 | fn generate_with_map(n: usize, map: &NgramMap) -> Result<String, Box<Error>> {
[INFO] [stderr]    |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/tweet.rs:8:42
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn tweet(n: usize) -> Result<(), Box<Error>> {
[INFO] [stderr]   |                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/tweet.rs:36:86
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn pin(core: &mut Core, handle: &Handle, con_token: &KeyPair) -> Result<KeyPair, Box<Error>> {
[INFO] [stderr]    |                                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.84s
[INFO] running `"docker" "inspect" "753dbef4a30ca2bed83e111b64c9c9e3cc354af0a2a634073bab54ad538083d1"`
[INFO] running `"docker" "rm" "-f" "753dbef4a30ca2bed83e111b64c9c9e3cc354af0a2a634073bab54ad538083d1"`
[INFO] [stdout] 753dbef4a30ca2bed83e111b64c9c9e3cc354af0a2a634073bab54ad538083d1