[INFO] updating cached repository zerosign/migrator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/zerosign/migrator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/zerosign/migrator" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/zerosign/migrator"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/zerosign/migrator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/zerosign/migrator" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/zerosign/migrator"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/zerosign/migrator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 23220a37d8736065ba2c2d12852fac7d83784737
[INFO] sha for GitHub repo zerosign/migrator: 23220a37d8736065ba2c2d12852fac7d83784737
[INFO] validating manifest of zerosign/migrator on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of zerosign/migrator on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing zerosign/migrator
[INFO] finished frobbing zerosign/migrator
[INFO] frobbed toml for zerosign/migrator written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/zerosign/migrator/Cargo.toml
[INFO] started frobbing zerosign/migrator
[INFO] finished frobbing zerosign/migrator
[INFO] frobbed toml for zerosign/migrator written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/zerosign/migrator/Cargo.toml
[INFO] crate zerosign/migrator already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/zerosign/migrator/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking zerosign/migrator against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-7/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/zerosign/migrator:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8767ab98979fe0eeeabf0262366838cc0399302b8b3c84c7784f05f2d218cdaf
[INFO] running `"docker" "start" "-a" "8767ab98979fe0eeeabf0262366838cc0399302b8b3c84c7784f05f2d218cdaf"`
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking arrayref v0.3.5
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]     Checking safemem v0.3.0
[INFO] [stderr]     Checking indexmap v1.0.2
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking try_from v0.2.2
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking md5 v0.3.8
[INFO] [stderr]     Checking separator v0.3.1
[INFO] [stderr]     Checking bitflags v0.1.1
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking data-encoding v2.1.2
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking semver v0.8.0
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]     Checking crypto-mac v0.6.2
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking rust-sqlite v0.3.0
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]     Checking hmac v0.6.3
[INFO] [stderr]     Checking md-5 v0.7.0
[INFO] [stderr]     Checking sha-1 v0.7.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking pbkdf2 v0.2.3
[INFO] [stderr]     Checking scan_fmt v0.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking toml v0.5.0
[INFO] [stderr]     Checking bson v0.13.0
[INFO] [stderr]     Checking textnonce v0.6.4
[INFO] [stderr]     Checking mongodb v0.3.12
[INFO] [stderr]     Checking migrator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/main.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(convert, custom_derive)]
[INFO] [stderr]   |                     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: subsumed by `#[proc_macro_derive]`
[INFO] [stderr]  --> src/main.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(convert, custom_derive)]
[INFO] [stderr]   |                     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/main.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(convert, custom_derive)]
[INFO] [stderr]   |                     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: subsumed by `#[proc_macro_derive]`
[INFO] [stderr]  --> src/main.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(convert, custom_derive)]
[INFO] [stderr]   |                     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:2:13
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[macro_use(bson, doc)]
[INFO] [stderr]   |             ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:2:19
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[macro_use(bson, doc)]
[INFO] [stderr]   |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Arc`, `Mutex`
[INFO] [stderr]  --> src/main.rs:7:17
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::sync::{Arc, Mutex};
[INFO] [stderr]   |                 ^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Receiver`, `Sender`, `channel`
[INFO] [stderr]  --> src/main.rs:8:23
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::sync::mpsc::{Sender, Receiver, channel};
[INFO] [stderr]   |                       ^^^^^^  ^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Ordering`, `PartialEq`, `PartialOrd`
[INFO] [stderr]  --> src/main.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::cmp::{PartialOrd, PartialEq, Ordering};
[INFO] [stderr]   |                ^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Display`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::fmt::Display;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::collections::BinaryHeap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `mongo::ThreadedClient`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use mongo::ThreadedClient;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0557`.
[INFO] [stderr] error: Could not compile `migrator`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:2:13
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[macro_use(bson, doc)]
[INFO] [stderr]   |             ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:2:19
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[macro_use(bson, doc)]
[INFO] [stderr]   |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Arc`, `Mutex`
[INFO] [stderr]  --> src/main.rs:7:17
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::sync::{Arc, Mutex};
[INFO] [stderr]   |                 ^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Receiver`, `Sender`, `channel`
[INFO] [stderr]  --> src/main.rs:8:23
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::sync::mpsc::{Sender, Receiver, channel};
[INFO] [stderr]   |                       ^^^^^^  ^^^^^^^^  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Ordering`, `PartialEq`, `PartialOrd`
[INFO] [stderr]  --> src/main.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::cmp::{PartialOrd, PartialEq, Ordering};
[INFO] [stderr]   |                ^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Display`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::fmt::Display;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::collections::BinaryHeap;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `mongo::ThreadedClient`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use mongo::ThreadedClient;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0557`.
[INFO] [stderr] error: Could not compile `migrator`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8767ab98979fe0eeeabf0262366838cc0399302b8b3c84c7784f05f2d218cdaf"`
[INFO] running `"docker" "rm" "-f" "8767ab98979fe0eeeabf0262366838cc0399302b8b3c84c7784f05f2d218cdaf"`
[INFO] [stdout] 8767ab98979fe0eeeabf0262366838cc0399302b8b3c84c7784f05f2d218cdaf